76693916578 has 4 divisors (see below), whose sum is σ = 115040874870. Its totient is φ = 38346958288.

The previous prime is 76693916561. The next prime is 76693916587. The reversal of 76693916578 is 87561939667.

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

It can be written as a sum of positive squares in only one way, i.e., 76671948609 + 21967969 = 276897^2 + 4687^2 .

It is a super-3 number, since 3×76693916578³ (a number of 34 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 19173479143 + ... + 19173479146.

Almost surely, 2^76693916578 is an apocalyptic number.

76693916578 is a deficient number, since it is larger than the sum of its proper divisors (38346958292).

76693916578 is a wasteful number, since it uses less digits than its factorization.

76693916578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38346958291.

The product of its digits is 102876480, while the sum is 67.

The spelling of 76693916578 in words is "seventy-six billion, six hundred ninety-three million, nine hundred sixteen thousand, five hundred seventy-eight".