27147877440 has 56 divisors (see below), whose sum is σ = 86194513920. Its totient is φ = 7239433728.

The previous prime is 27147877397. The next prime is 27147877457. The reversal of 27147877440 is 4477874172.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14138560 + ... + 14140479.

Almost surely, 2^27147877440 is an apocalyptic number.

27147877440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27147877440 is an abundant number, since it is smaller than the sum of its proper divisors (59046636480).

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

27147877440 is a wasteful number, since it uses less digits than its factorization.

27147877440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28279059 (or 28279049 counting only the distinct ones).

The product of its (nonzero) digits is 2458624, while the sum is 51.

The spelling of 27147877440 in words is "twenty-seven billion, one hundred forty-seven million, eight hundred seventy-seven thousand, four hundred forty".