27509440455 has 128 divisors (see below), whose sum is σ = 59686502400. Its totient is φ = 11750054400.

The previous prime is 27509440429. The next prime is 27509440457. The reversal of 27509440455 is 55404490572.

27509440455 is a `hidden beast` number, since 2 + 75 + 0 + 94 + 40 + 455 = 666.

It is not a de Polignac number, because 27509440455 - 2⁸ = 27509440199 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 27509440455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27509440457) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 833365 + ... + 865745.

It is an arithmetic number, because the mean of its divisors is an integer number (466300800).

Almost surely, 2^27509440455 is an apocalyptic number.

27509440455 is an abundant number, since it is smaller than the sum of its proper divisors (32177061945).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27509440455 is a wasteful number, since it uses less digits than its factorization.

27509440455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32462 (or 32456 counting only the distinct ones).

The product of its (nonzero) digits is 1008000, while the sum is 45.

The spelling of 27509440455 in words is "twenty-seven billion, five hundred nine million, four hundred forty thousand, four hundred fifty-five".