27399520137 has 16 divisors (see below), whose sum is σ = 39871383552. Its totient is φ = 16598463120.

The previous prime is 27399520021. The next prime is 27399520147. The reversal of 27399520137 is 73102599372.

It is not a de Polignac number, because 27399520137 - 2⁸ = 27399519881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (27399520147) 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, 106053 + ... + 256994.

It is an arithmetic number, because the mean of its divisors is an integer number (2491961472).

Almost surely, 2^27399520137 is an apocalyptic number.

It is an amenable number.

27399520137 is a deficient number, since it is larger than the sum of its proper divisors (12471863415).

27399520137 is a wasteful number, since it uses less digits than its factorization.

27399520137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365348.

The product of its (nonzero) digits is 714420, while the sum is 48.

The spelling of 27399520137 in words is "twenty-seven billion, three hundred ninety-nine million, five hundred twenty thousand, one hundred thirty-seven".