27777474340 has 96 divisors (see below), whose sum is σ = 72794308608. Its totient is φ = 8649840000.

The previous prime is 27777474301. The next prime is 27777474379. The reversal of 27777474340 is 4347477772.

It is an interprime number because it is at equal distance from previous prime (27777474301) and next prime (27777474379).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1764705 + ... + 1780375.

It is an arithmetic number, because the mean of its divisors is an integer number (758274048).

Almost surely, 2^27777474340 is an apocalyptic number.

27777474340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27777474340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36397154304).

27777474340 is an abundant number, since it is smaller than the sum of its proper divisors (45016834268).

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

27777474340 is a wasteful number, since it uses less digits than its factorization.

27777474340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16849 (or 16847 counting only the distinct ones).

The product of its (nonzero) digits is 6453888, while the sum is 52.

The spelling of 27777474340 in words is "twenty-seven billion, seven hundred seventy-seven million, four hundred seventy-four thousand, three hundred forty".