75665056657 has 8 divisors (see below), whose sum is σ = 79657961760. Its totient is φ = 71673204960.

The previous prime is 75665056637. The next prime is 75665056669.

75665056657 is nontrivially palindromic in base 10.

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 75665056657 - 2³¹ = 73517573009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75665056637) 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, 113719 + ... + 405292.

It is an arithmetic number, because the mean of its divisors is an integer number (9957245220).

Almost surely, 2^75665056657 is an apocalyptic number.

It is an amenable number.

75665056657 is a deficient number, since it is larger than the sum of its proper divisors (3992905103).

75665056657 is a wasteful number, since it uses less digits than its factorization.

75665056657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526703.

The product of its (nonzero) digits is 39690000, while the sum is 58.

The spelling of 75665056657 in words is "seventy-five billion, six hundred sixty-five million, fifty-six thousand, six hundred fifty-seven".