27137261256 has 32 divisors (see below), whose sum is σ = 77535032640. Its totient is φ = 7753503168.

The previous prime is 27137261251. The next prime is 27137261269. The reversal of 27137261256 is 65216273172.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (27137261251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80765491 + ... + 80765826.

It is an arithmetic number, because the mean of its divisors is an integer number (2422969770).

Almost surely, 2^27137261256 is an apocalyptic number.

It is an amenable number.

27137261256 is an abundant number, since it is smaller than the sum of its proper divisors (50397771384).

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

27137261256 is a wasteful number, since it uses less digits than its factorization.

27137261256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161531333 (or 161531329 counting only the distinct ones).

The product of its digits is 211680, while the sum is 42.

The spelling of 27137261256 in words is "twenty-seven billion, one hundred thirty-seven million, two hundred sixty-one thousand, two hundred fifty-six".