75677728636 has 6 divisors (see below), whose sum is σ = 132436025120. Its totient is φ = 37838864316.

The previous prime is 75677728627. The next prime is 75677728691. The reversal of 75677728636 is 63682777657.

It is a super-2 number, since 2×75677728636² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9459716076 + ... + 9459716083.

Almost surely, 2^75677728636 is an apocalyptic number.

It is an amenable number.

75677728636 is a deficient number, since it is larger than the sum of its proper divisors (56758296484).

75677728636 is a wasteful number, since it uses less digits than its factorization.

75677728636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18919432163 (or 18919432161 counting only the distinct ones).

The product of its digits is 124467840, while the sum is 64.

The spelling of 75677728636 in words is "seventy-five billion, six hundred seventy-seven million, seven hundred twenty-eight thousand, six hundred thirty-six".