80773437928 has 32 divisors (see below), whose sum is σ = 152424909000. Its totient is φ = 40127201280.

The previous prime is 80773437919. The next prime is 80773437929. The reversal of 80773437928 is 82973437708.

It can be written as a sum of positive squares in 4 ways, for example, as 20943299524 + 59830138404 = 144718^2 + 244602^2 .

It is not an unprimeable number, because it can be changed into a prime (80773437929) 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, 1610088 + ... + 1659496.

Almost surely, 2^80773437928 is an apocalyptic number.

It is an amenable number.

80773437928 is a deficient number, since it is larger than the sum of its proper divisors (71651471072).

80773437928 is a wasteful number, since it uses less digits than its factorization.

80773437928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50725 (or 50721 counting only the distinct ones).

The product of its (nonzero) digits is 14224896, while the sum is 58.

The spelling of 80773437928 in words is "eighty billion, seven hundred seventy-three million, four hundred thirty-seven thousand, nine hundred twenty-eight".