76783016691 has 8 divisors (see below), whose sum is σ = 113752617360. Its totient is φ = 51188677776.

The previous prime is 76783016671. The next prime is 76783016701. The reversal of 76783016691 is 19661038767.

It is a happy number.

It is not a de Polignac number, because 76783016691 - 2⁵ = 76783016659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (76783016671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1421907690 + ... + 1421907743.

It is an arithmetic number, because the mean of its divisors is an integer number (14219077170).

Almost surely, 2^76783016691 is an apocalyptic number.

76783016691 is a deficient number, since it is larger than the sum of its proper divisors (36969600669).

76783016691 is a wasteful number, since it uses less digits than its factorization.

76783016691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2843815442 (or 2843815436 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 76783016691 in words is "seventy-six billion, seven hundred eighty-three million, sixteen thousand, six hundred ninety-one".