27501377531 has 2 divisors, whose sum is σ = 27501377532. Its totient is φ = 27501377530.

The previous prime is 27501377503. The next prime is 27501377569. The reversal of 27501377531 is 13577310572.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27501377531 is a prime.

It is a super-2 number, since 2×27501377531² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27501377831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13750688765 + 13750688766.

It is an arithmetic number, because the mean of its divisors is an integer number (13750688766).

Almost surely, 2^27501377531 is an apocalyptic number.

27501377531 is a deficient number, since it is larger than the sum of its proper divisors (1).

27501377531 is an equidigital number, since it uses as much as digits as its factorization.

27501377531 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 154350, while the sum is 41.

The spelling of 27501377531 in words is "twenty-seven billion, five hundred one million, three hundred seventy-seven thousand, five hundred thirty-one".