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80637050880 = 21433536457
BaseRepresentation
bin100101100011001010…
…1111100000000000000
321201010201211121112000
41023012111330000000
52310121041112010
6101013311504000
75553155423541
oct1130625740000
9251121747460
1080637050880
113121a570911
1213765228000
1377b1103ab9
143c8d6084c8
15216e3a97c0
hex12c657c000

80637050880 has 240 divisors, whose sum is σ = 286708628640. Its totient is φ = 21502623744.

The previous prime is 80637050863. The next prime is 80637050903. The reversal of 80637050880 is 8805073608.

80637050880 is a `hidden beast` number, since 8 + 0 + 63 + 7 + 0 + 508 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2193612 + ... + 2230068.

It is an arithmetic number, because the mean of its divisors is an integer number (1194619286).

Almost surely, 280637050880 is an apocalyptic number.

80637050880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 80637050880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143354314320).

80637050880 is an abundant number, since it is smaller than the sum of its proper divisors (206071577760).

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

80637050880 is an equidigital number, since it uses as much as digits as its factorization.

80637050880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36499 (or 36467 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 80637050880 in words is "eighty billion, six hundred thirty-seven million, fifty thousand, eight hundred eighty".