27750431457 has 96 divisors (see below), whose sum is σ = 49942593792. Its totient is φ = 14484344832.

The previous prime is 27750431419. The next prime is 27750431461. The reversal of 27750431457 is 75413405772.

27750431457 is a `hidden beast` number, since 2 + 77 + 504 + 31 + 45 + 7 = 666.

It is not a de Polignac number, because 27750431457 - 2⁶ = 27750431393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27750431257) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 23260453 + ... + 23261645.

It is an arithmetic number, because the mean of its divisors is an integer number (520235352).

Almost surely, 2^27750431457 is an apocalyptic number.

It is an amenable number.

27750431457 is a deficient number, since it is larger than the sum of its proper divisors (22192162335).

27750431457 is a wasteful number, since it uses less digits than its factorization.

27750431457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1847 (or 1844 counting only the distinct ones).

The product of its (nonzero) digits is 823200, while the sum is 45.

The spelling of 27750431457 in words is "twenty-seven billion, seven hundred fifty million, four hundred thirty-one thousand, four hundred fifty-seven".