28711257357312 has 132 divisors (see below), whose sum is σ = 85143758760216. Its totient is φ = 9311759032320.

The previous prime is 28711257357269. The next prime is 28711257357361. The reversal of 28711257357312 is 21375375211782.

28711257357312 is a `hidden beast` number, since 2 + 8 + 7 + 1 + 1 + 2 + 57 + 3 + 573 + 12 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41758614 + ... + 42440597.

Almost surely, 2^{28711257357312} is an apocalyptic number.

It is an amenable number.

28711257357312 is an abundant number, since it is smaller than the sum of its proper divisors (56432501402904).

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

28711257357312 is a wasteful number, since it uses less digits than its factorization.

28711257357312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84199274 (or 84199253 counting only the distinct ones).

The product of its digits is 4939200, while the sum is 54.

The spelling of 28711257357312 in words is "twenty-eight trillion, seven hundred eleven billion, two hundred fifty-seven million, three hundred fifty-seven thousand, three hundred twelve".