80726757868 has 12 divisors (see below), whose sum is σ = 141894170712. Its totient is φ = 40185566240.

The previous prime is 80726757863. The next prime is 80726757899. The reversal of 80726757868 is 86875762708.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (80726757863) 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, 44452153 + ... + 44453968.

It is an arithmetic number, because the mean of its divisors is an integer number (11824514226).

Almost surely, 2^80726757868 is an apocalyptic number.

It is an amenable number.

80726757868 is a deficient number, since it is larger than the sum of its proper divisors (61167412844).

80726757868 is a wasteful number, since it uses less digits than its factorization.

80726757868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88906352 (or 88906350 counting only the distinct ones).

The product of its (nonzero) digits is 63221760, while the sum is 64.

The spelling of 80726757868 in words is "eighty billion, seven hundred twenty-six million, seven hundred fifty-seven thousand, eight hundred sixty-eight".