27102661604 has 18 divisors (see below), whose sum is σ = 50383756290. Its totient is φ = 12754193152.

The previous prime is 27102661571. The next prime is 27102661609. The reversal of 27102661604 is 40616620172.

It can be written as a sum of positive squares in 3 ways, for example, as 9186839104 + 17915822500 = 95848^2 + 133850^2 .

It is not an unprimeable number, because it can be changed into a prime (27102661609) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11721449 + ... + 11723760.

Almost surely, 2^27102661604 is an apocalyptic number.

It is an amenable number.

27102661604 is a deficient number, since it is larger than the sum of its proper divisors (23281094686).

27102661604 is a wasteful number, since it uses less digits than its factorization.

27102661604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23445247 (or 23445228 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 27102661604 in words is "twenty-seven billion, one hundred two million, six hundred sixty-one thousand, six hundred four".