28027527502491 has 24 divisors (see below), whose sum is σ = 44512341479424. Its totient is φ = 16852629270960.

The previous prime is 28027527502453. The next prime is 28027527502517. The reversal of 28027527502491 is 19420572572082.

It is a happy number.

28027527502491 is a `hidden beast` number, since 2 + 8 + 0 + 2 + 7 + 527 + 5 + 0 + 24 + 91 = 666.

It is not a de Polignac number, because 28027527502491 - 2⁶ = 28027527502427 is a prime.

It is a super-2 number, since 2×28027527502491² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28027527502411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1114579311 + ... + 1114604456.

It is an arithmetic number, because the mean of its divisors is an integer number (1854680894976).

Almost surely, 2^{28027527502491} is an apocalyptic number.

28027527502491 is a deficient number, since it is larger than the sum of its proper divisors (16484813976933).

28027527502491 is a wasteful number, since it uses less digits than its factorization.

28027527502491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229183911 (or 2229183908 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 28027527502491 in words is "twenty-eight trillion, twenty-seven billion, five hundred twenty-seven million, five hundred two thousand, four hundred ninety-one".