76697938739 has 4 divisors (see below), whose sum is σ = 78329809824. Its totient is φ = 75066067656.

The previous prime is 76697938661. The next prime is 76697938843. The reversal of 76697938739 is 93783979667.

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

It is a cyclic number.

It is not a de Polignac number, because 76697938739 - 2²⁴ = 76681161523 is a prime.

It is a super-2 number, since 2×76697938739² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76697932739) 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, 815935472 + ... + 815935565.

It is an arithmetic number, because the mean of its divisors is an integer number (19582452456).

Almost surely, 2^76697938739 is an apocalyptic number.

76697938739 is a deficient number, since it is larger than the sum of its proper divisors (1631871085).

76697938739 is a wasteful number, since it uses less digits than its factorization.

76697938739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631871084.

The product of its digits is 648121824, while the sum is 74.

The spelling of 76697938739 in words is "seventy-six billion, six hundred ninety-seven million, nine hundred thirty-eight thousand, seven hundred thirty-nine".