27777116238 has 64 divisors (see below), whose sum is σ = 61415926272. Its totient is φ = 8330572800.

The previous prime is 27777116209. The next prime is 27777116239. The reversal of 27777116238 is 83261177772.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27777116239) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6686370 + ... + 6690522.

It is an arithmetic number, because the mean of its divisors is an integer number (959623848).

Almost surely, 2^27777116238 is an apocalyptic number.

27777116238 is an abundant number, since it is smaller than the sum of its proper divisors (33638810034).

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

27777116238 is a wasteful number, since it uses less digits than its factorization.

27777116238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7049.

The product of its digits is 1382976, while the sum is 51.

The spelling of 27777116238 in words is "twenty-seven billion, seven hundred seventy-seven million, one hundred sixteen thousand, two hundred thirty-eight".