75675457657 has 4 divisors (see below), whose sum is σ = 76424719716. Its totient is φ = 74926195600.

The previous prime is 75675457639. The next prime is 75675457661.

75675457657 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69750922816 + 5924534841 = 264104^2 + 76971^2 .

It is a cyclic number.

It is not a de Polignac number, because 75675457657 - 2²⁷ = 75541239929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75675457157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 374630878 + ... + 374631079.

It is an arithmetic number, because the mean of its divisors is an integer number (19106179929).

Almost surely, 2^75675457657 is an apocalyptic number.

It is an amenable number.

75675457657 is a deficient number, since it is larger than the sum of its proper divisors (749262059).

75675457657 is a wasteful number, since it uses less digits than its factorization.

75675457657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749262058.

The product of its digits is 216090000, while the sum is 64.

The spelling of 75675457657 in words is "seventy-five billion, six hundred seventy-five million, four hundred fifty-seven thousand, six hundred fifty-seven".