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66479014589 = 138361611691
BaseRepresentation
bin111101111010011101…
…010100001010111101
320100121000222211220112
4331322131110022331
52042122111431324
650312351555405
74542261205031
oct757235241275
9210530884815
1066479014589
1126214741679
1210a7382bb65
136365b41230
1433091541c1
151ae145ac0e
hexf7a7542bd

66479014589 has 8 divisors (see below), whose sum is σ = 72455349792. Its totient is φ = 60625902960.

The previous prime is 66479014517. The next prime is 66479014639. The reversal of 66479014589 is 98541097466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66479014589 - 28 = 66479014333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66472014589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30804767 + ... + 30806924.

It is an arithmetic number, because the mean of its divisors is an integer number (9056918724).

Almost surely, 266479014589 is an apocalyptic number.

It is an amenable number.

66479014589 is a deficient number, since it is larger than the sum of its proper divisors (5976335203).

66479014589 is a wasteful number, since it uses less digits than its factorization.

66479014589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61611787.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 66479014589 in words is "sixty-six billion, four hundred seventy-nine million, fourteen thousand, five hundred eighty-nine".

Divisors: 1 13 83 1079 61611691 800951983 5113770353 66479014589