27400845972 has 96 divisors (see below), whose sum is σ = 68143398400. Its totient is φ = 8545046400.

The previous prime is 27400845961. The next prime is 27400846001. The reversal of 27400845972 is 27954800472.

It is a congruent number.

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, 8224347 + ... + 8227677.

Almost surely, 2^27400845972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27400845972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34071699200).

27400845972 is an abundant number, since it is smaller than the sum of its proper divisors (40742552428).

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

27400845972 is a wasteful number, since it uses less digits than its factorization.

27400845972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3797 (or 3795 counting only the distinct ones).

The product of its (nonzero) digits is 1128960, while the sum is 48.

The spelling of 27400845972 in words is "twenty-seven billion, four hundred million, eight hundred forty-five thousand, nine hundred seventy-two".