28088777049696 has 144 divisors (see below), whose sum is σ = 88615980573120. Its totient is φ = 8367483605760.

The previous prime is 28088777049677. The next prime is 28088777049757. The reversal of 28088777049696 is 69694077788082.

28088777049696 is a `hidden beast` number, since 280 + 88 + 77 + 70 + 49 + 6 + 96 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a super-2 number, since 2×28088777049696² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74952130 + ... + 75325953.

It is an arithmetic number, because the mean of its divisors is an integer number (615388753980).

Almost surely, 2^{28088777049696} is an apocalyptic number.

It is an amenable number.

28088777049696 is an abundant number, since it is smaller than the sum of its proper divisors (60527203523424).

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

28088777049696 is a wasteful number, since it uses less digits than its factorization.

28088777049696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150278169 (or 150278158 counting only the distinct ones).

The product of its (nonzero) digits is 4096770048, while the sum is 81.

The spelling of 28088777049696 in words is "twenty-eight trillion, eighty-eight billion, seven hundred seventy-seven million, forty-nine thousand, six hundred ninety-six".