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14471918999620 = 225723595949981
BaseRepresentation
bin1101001010011000000110…
…0101110101100001000100
31220020111112220210001012221
43102212001211311201010
53344101442230441440
650440150253022124
73022363433562235
oct322460145654104
956214486701187
1014471918999620
11467a562aa1955
121758908484944
1380c908463464
1438063205908c
151a16ab619d4a
hexd2981975844

14471918999620 has 12 divisors (see below), whose sum is σ = 30391029899244. Its totient is φ = 5788767599840.

The previous prime is 14471918999599. The next prime is 14471918999621. The reversal of 14471918999620 is 2699981917441.

It can be written as a sum of positive squares in 2 ways, for example, as 8097940193344 + 6373978806276 = 2845688^2 + 2524674^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 14471918999620.

It is not an unprimeable number, because it can be changed into a prime (14471918999621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361797974971 + ... + 361797975010.

It is an arithmetic number, because the mean of its divisors is an integer number (2532585824937).

Almost surely, 214471918999620 is an apocalyptic number.

14471918999620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14471918999620 is an abundant number, since it is smaller than the sum of its proper divisors (15919110899624).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

14471918999620 is a wasteful number, since it uses less digits than its factorization.

14471918999620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 723595949990 (or 723595949988 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 70.

The spelling of 14471918999620 in words is "fourteen trillion, four hundred seventy-one billion, nine hundred eighteen million, nine hundred ninety-nine thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 723595949981 1447191899962 2894383799924 3617979749905 7235959499810 14471918999620