80939435797 has 12 divisors (see below), whose sum is σ = 89085051328. Its totient is φ = 73483245000.

The previous prime is 80939435791. The next prime is 80939435813. The reversal of 80939435797 is 79753493908.

It is a happy number.

It is not a de Polignac number, because 80939435797 - 2⁷ = 80939435669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80939435791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 354483 + ... + 536224.

Almost surely, 2^80939435797 is an apocalyptic number.

It is an amenable number.

80939435797 is a deficient number, since it is larger than the sum of its proper divisors (8145615531).

80939435797 is a wasteful number, since it uses less digits than its factorization.

80939435797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 891480 (or 891469 counting only the distinct ones).

The product of its (nonzero) digits is 51438240, while the sum is 64.

The spelling of 80939435797 in words is "eighty billion, nine hundred thirty-nine million, four hundred thirty-five thousand, seven hundred ninety-seven".