75456665457 has 8 divisors (see below), whose sum is σ = 102507168384. Its totient is φ = 49355303088.

The previous prime is 75456665441. The next prime is 75456665489.

It is a happy number.

75456665457 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 75456665457 - 2⁴ = 75456665441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75456665457.

It is not an unprimeable number, because it can be changed into a prime (75456665437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237284953 + ... + 237285270.

It is an arithmetic number, because the mean of its divisors is an integer number (12813396048).

Almost surely, 2^75456665457 is an apocalyptic number.

It is an amenable number.

75456665457 is a deficient number, since it is larger than the sum of its proper divisors (27050502927).

75456665457 is a wasteful number, since it uses less digits than its factorization.

75456665457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474570279.

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

The spelling of 75456665457 in words is "seventy-five billion, four hundred fifty-six million, six hundred sixty-five thousand, four hundred fifty-seven".