27393070640 has 320 divisors, whose sum is σ = 75235184640. Its totient is φ = 9185218560.

The previous prime is 27393070637. The next prime is 27393070699. The reversal of 27393070640 is 4607039372.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 120674207 + ... + 120674433.

It is an arithmetic number, because the mean of its divisors is an integer number (235109952).

Almost surely, 2^27393070640 is an apocalyptic number.

27393070640 is a gapful number since it is divisible by the number (20) 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 27393070640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37617592320).

27393070640 is an abundant number, since it is smaller than the sum of its proper divisors (47842114000).

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

27393070640 is a wasteful number, since it uses less digits than its factorization.

27393070640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 500 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 190512, while the sum is 41.

The spelling of 27393070640 in words is "twenty-seven billion, three hundred ninety-three million, seventy thousand, six hundred forty".