27433297980 has 72 divisors (see below), whose sum is σ = 90779283504. Its totient is φ = 6650496000.

The previous prime is 27433297961. The next prime is 27433297981. The reversal of 27433297980 is 8979233472.

27433297980 is a `hidden beast` number, since 274 + 3 + 3 + 297 + 9 + 80 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27433297981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6925621 + ... + 6929580.

It is an arithmetic number, because the mean of its divisors is an integer number (1260823382).

Almost surely, 2^27433297980 is an apocalyptic number.

27433297980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27433297980 is an abundant number, since it is smaller than the sum of its proper divisors (63345985524).

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

27433297980 is a wasteful number, since it uses less digits than its factorization.

27433297980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13855227 (or 13855222 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 54.

The spelling of 27433297980 in words is "twenty-seven billion, four hundred thirty-three million, two hundred ninety-seven thousand, nine hundred eighty".