28737273667776 has 56 divisors (see below), whose sum is σ = 76706904217584. Its totient is φ = 9494320496640.

The previous prime is 28737273667769. The next prime is 28737273667777. The reversal of 28737273667776 is 67776637273782.

It is not an unprimeable number, because it can be changed into a prime (28737273667777) 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, 662249545 + ... + 662292936.

Almost surely, 2^{28737273667776} is an apocalyptic number.

It is an amenable number.

28737273667776 is an abundant number, since it is smaller than the sum of its proper divisors (47969630549808).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28737273667776 is a wasteful number, since it uses less digits than its factorization.

28737273667776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324542609 (or 1324542599 counting only the distinct ones).

The product of its digits is 7318708992, while the sum is 78.

The spelling of 28737273667776 in words is "twenty-eight trillion, seven hundred thirty-seven billion, two hundred seventy-three million, six hundred sixty-seven thousand, seven hundred seventy-six".