28091025000881 has 16 divisors (see below), whose sum is σ = 28809752146560. Its totient is φ = 27373913992320.

The previous prime is 28091025000853. The next prime is 28091025000887. The reversal of 28091025000881 is 18800052019082.

It is a cyclic number.

It is not a de Polignac number, because 28091025000881 - 2¹⁰ = 28091024999857 is a prime.

It is a super-2 number, since 2×28091025000881² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28091025000887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133848830 + ... + 134058536.

It is an arithmetic number, because the mean of its divisors is an integer number (1800609509160).

Almost surely, 2^{28091025000881} is an apocalyptic number.

It is an amenable number.

28091025000881 is a deficient number, since it is larger than the sum of its proper divisors (718727145679).

28091025000881 is a wasteful number, since it uses less digits than its factorization.

28091025000881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213544.

The product of its (nonzero) digits is 92160, while the sum is 44.

The spelling of 28091025000881 in words is "twenty-eight trillion, ninety-one billion, twenty-five million, eight hundred eighty-one", and thus it is an aban number.