27137710621 has 24 divisors (see below), whose sum is σ = 34040381760. Its totient is φ = 21499128000.

The previous prime is 27137710601. The next prime is 27137710637. The reversal of 27137710621 is 12601773172.

It is a happy number.

It is not a de Polignac number, because 27137710621 - 2⁹ = 27137710109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27137710601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317305 + ... + 393646.

It is an arithmetic number, because the mean of its divisors is an integer number (1418349240).

Almost surely, 2^27137710621 is an apocalyptic number.

It is an amenable number.

27137710621 is a deficient number, since it is larger than the sum of its proper divisors (6902671139).

27137710621 is a wasteful number, since it uses less digits than its factorization.

27137710621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711025 (or 711018 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 37.

The spelling of 27137710621 in words is "twenty-seven billion, one hundred thirty-seven million, seven hundred ten thousand, six hundred twenty-one".