28381544383056 has 160 divisors (see below), whose sum is σ = 81841152688128. Its totient is φ = 8433451407360.

The previous prime is 28381544383013. The next prime is 28381544383063. The reversal of 28381544383056 is 65038344518382.

It is a super-3 number, since 3×28381544383056³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10747020 + ... + 13124843.

Almost surely, 2^{28381544383056} is an apocalyptic number.

It is an amenable number.

28381544383056 is an abundant number, since it is smaller than the sum of its proper divisors (53459608305072).

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

28381544383056 is a wasteful number, since it uses less digits than its factorization.

28381544383056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23871969 (or 23871963 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 60.

The spelling of 28381544383056 in words is "twenty-eight trillion, three hundred eighty-one billion, five hundred forty-four million, three hundred eighty-three thousand, fifty-six".