27938751488 has 44 divisors (see below), whose sum is σ = 57651904512. Its totient is φ = 13518735360.

The previous prime is 27938751481. The next prime is 27938751509. The reversal of 27938751488 is 88415783972.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a self number, because there is not a number n which added to its sum of digits gives 27938751488.

It is not an unprimeable number, because it can be changed into a prime (27938751481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 408320 + ... + 471807.

Almost surely, 2^27938751488 is an apocalyptic number.

It is an amenable number.

27938751488 is an abundant number, since it is smaller than the sum of its proper divisors (29713153024).

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

27938751488 is an equidigital number, since it uses as much as digits as its factorization.

27938751488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 880178 (or 880160 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 62.

The spelling of 27938751488 in words is "twenty-seven billion, nine hundred thirty-eight million, seven hundred fifty-one thousand, four hundred eighty-eight".