27438407580 has 24 divisors (see below), whose sum is σ = 76827541392. Its totient is φ = 7316908672.

The previous prime is 27438407569. The next prime is 27438407587. The reversal of 27438407580 is 8570483472.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27438407587) 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, 228653337 + ... + 228653456.

It is an arithmetic number, because the mean of its divisors is an integer number (3201147558).

Almost surely, 2^27438407580 is an apocalyptic number.

27438407580 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27438407580 is an abundant number, since it is smaller than the sum of its proper divisors (49389133812).

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

27438407580 is a wasteful number, since it uses less digits than its factorization.

27438407580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457306805 (or 457306803 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 27438407580 in words is "twenty-seven billion, four hundred thirty-eight million, four hundred seven thousand, five hundred eighty".