27752131251 has 16 divisors (see below), whose sum is σ = 44276905120. Its totient is φ = 17078234400.

The previous prime is 27752131249. The next prime is 27752131261. The reversal of 27752131251 is 15213125772.

27752131251 is a `hidden beast` number, since 2 + 7 + 7 + 521 + 3 + 125 + 1 = 666.

It is not a de Polignac number, because 27752131251 - 2¹ = 27752131249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27752131261) 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, 39532600 + ... + 39533301.

It is an arithmetic number, because the mean of its divisors is an integer number (2767306570).

Almost surely, 2^27752131251 is an apocalyptic number.

27752131251 is a deficient number, since it is larger than the sum of its proper divisors (16524773869).

27752131251 is a wasteful number, since it uses less digits than its factorization.

27752131251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79065923 (or 79065917 counting only the distinct ones).

The product of its digits is 29400, while the sum is 36.

The spelling of 27752131251 in words is "twenty-seven billion, seven hundred fifty-two million, one hundred thirty-one thousand, two hundred fifty-one".