75654645657 has 8 divisors (see below), whose sum is σ = 102254681184. Its totient is φ = 49745520288.

The previous prime is 75654645613. The next prime is 75654645727.

It is a happy number.

75654645657 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 75654645657 - 2²⁴ = 75637868441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75654645657.

It is not an unprimeable number, because it can be changed into a prime (75654645557) 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, 172727283 + ... + 172727720.

It is an arithmetic number, because the mean of its divisors is an integer number (12781835148).

Almost surely, 2^75654645657 is an apocalyptic number.

It is an amenable number.

75654645657 is a deficient number, since it is larger than the sum of its proper divisors (26600035527).

75654645657 is a wasteful number, since it uses less digits than its factorization.

75654645657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345455079.

The product of its digits is 105840000, while the sum is 60.

The spelling of 75654645657 in words is "seventy-five billion, six hundred fifty-four million, six hundred forty-five thousand, six hundred fifty-seven".