27490405488 has 160 divisors (see below), whose sum is σ = 89055300096. Its totient is φ = 7113360384.

The previous prime is 27490405477. The next prime is 27490405499. The reversal of 27490405488 is 88450409472.

It is an interprime number because it is at equal distance from previous prime (27490405477) and next prime (27490405499).

It is a self number, because there is not a number n which added to its sum of digits gives 27490405488.

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, 172131 + ... + 290877.

Almost surely, 2^27490405488 is an apocalyptic number.

27490405488 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27490405488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44527650048).

27490405488 is an abundant number, since it is smaller than the sum of its proper divisors (61564894608).

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

27490405488 is a wasteful number, since it uses less digits than its factorization.

27490405488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118831 (or 118825 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 27490405488 in words is "twenty-seven billion, four hundred ninety million, four hundred five thousand, four hundred eighty-eight".