27742145164 has 24 divisors (see below), whose sum is σ = 51409678320. Its totient is φ = 13053828096.

The previous prime is 27742145149. The next prime is 27742145173. The reversal of 27742145164 is 46154124772.

It is a self number, because there is not a number n which added to its sum of digits gives 27742145164.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1232499 + ... + 1254805.

It is an arithmetic number, because the mean of its divisors is an integer number (2142069930).

Almost surely, 2^27742145164 is an apocalyptic number.

It is an amenable number.

27742145164 is a deficient number, since it is larger than the sum of its proper divisors (23667533156).

27742145164 is a wasteful number, since it uses less digits than its factorization.

27742145164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40617 (or 40615 counting only the distinct ones).

The product of its digits is 376320, while the sum is 43.

The spelling of 27742145164 in words is "twenty-seven billion, seven hundred forty-two million, one hundred forty-five thousand, one hundred sixty-four".