76647708538 has 8 divisors (see below), whose sum is σ = 115089971040. Its totient is φ = 38284384860.

The previous prime is 76647708509. The next prime is 76647708551. The reversal of 76647708538 is 83580774667.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19732278 + ... + 19736161.

It is an arithmetic number, because the mean of its divisors is an integer number (14386246380).

Almost surely, 2^76647708538 is an apocalyptic number.

76647708538 is a deficient number, since it is larger than the sum of its proper divisors (38442262502).

76647708538 is a wasteful number, since it uses less digits than its factorization.

76647708538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39469412.

The product of its (nonzero) digits is 47416320, while the sum is 61.

The spelling of 76647708538 in words is "seventy-six billion, six hundred forty-seven million, seven hundred eight thousand, five hundred thirty-eight".