27397825854 has 32 divisors (see below), whose sum is σ = 64643721216. Its totient is φ = 7575435360.

The previous prime is 27397825853. The next prime is 27397825867. The reversal of 27397825854 is 45852879372.

It is a super-2 number, since 2×27397825854² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27397825853) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10520137 + ... + 10522740.

It is an arithmetic number, because the mean of its divisors is an integer number (2020116288).

Almost surely, 2^27397825854 is an apocalyptic number.

27397825854 is an abundant number, since it is smaller than the sum of its proper divisors (37245895362).

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

27397825854 is a wasteful number, since it uses less digits than its factorization.

27397825854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21042920.

The product of its digits is 33868800, while the sum is 60.

The spelling of 27397825854 in words is "twenty-seven billion, three hundred ninety-seven million, eight hundred twenty-five thousand, eight hundred fifty-four".