76688762819 has 4 divisors (see below), whose sum is σ = 76694369760. Its totient is φ = 76683155880.

The previous prime is 76688762809. The next prime is 76688762831. The reversal of 76688762819 is 91826788667.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-76688762819 is a prime.

It is a super-2 number, since 2×76688762819² (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 (76688762809) 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, 2782904 + ... + 2810325.

It is an arithmetic number, because the mean of its divisors is an integer number (19173592440).

Almost surely, 2^76688762819 is an apocalyptic number.

76688762819 is a deficient number, since it is larger than the sum of its proper divisors (5606941).

76688762819 is a wasteful number, since it uses less digits than its factorization.

76688762819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5606940.

The product of its digits is 97542144, while the sum is 68.

The spelling of 76688762819 in words is "seventy-six billion, six hundred eighty-eight million, seven hundred sixty-two thousand, eight hundred nineteen".