27158602506 has 24 divisors (see below), whose sum is σ = 63185320800. Its totient is φ = 7759600632.

The previous prime is 27158602487. The next prime is 27158602507. The reversal of 27158602506 is 60520685172.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (27158602507) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46187806 + ... + 46188393.

It is an arithmetic number, because the mean of its divisors is an integer number (2632721700).

Almost surely, 2^27158602506 is an apocalyptic number.

27158602506 is an abundant number, since it is smaller than the sum of its proper divisors (36026718294).

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

27158602506 is a wasteful number, since it uses less digits than its factorization.

27158602506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92376218 (or 92376211 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The spelling of 27158602506 in words is "twenty-seven billion, one hundred fifty-eight million, six hundred two thousand, five hundred six".