28125509095944 has 64 divisors (see below), whose sum is σ = 84136138329600. Its totient is φ = 8654002797888.

The previous prime is 28125509095921. The next prime is 28125509095973. The reversal of 28125509095944 is 44959090552182.

28125509095944 is a `hidden beast` number, since 2 + 81 + 2 + 5 + 509 + 0 + 9 + 5 + 9 + 44 = 666.

It is a super-2 number, since 2×28125509095944² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5008100664 + ... + 5008106279.

It is an arithmetic number, because the mean of its divisors is an integer number (1314627161400).

Almost surely, 2^{28125509095944} is an apocalyptic number.

28125509095944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

28125509095944 is an abundant number, since it is smaller than the sum of its proper divisors (56010629233656).

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

28125509095944 is a wasteful number, since it uses less digits than its factorization.

28125509095944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016206971 (or 10016206961 counting only the distinct ones).

The product of its (nonzero) digits is 46656000, while the sum is 63.

The spelling of 28125509095944 in words is "twenty-eight trillion, one hundred twenty-five billion, five hundred nine million, ninety-five thousand, nine hundred forty-four".