27721992604 has 6 divisors (see below), whose sum is σ = 48513487064. Its totient is φ = 13860996300.

The previous prime is 27721992583. The next prime is 27721992619. The reversal of 27721992604 is 40629912772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3465249072 + ... + 3465249079.

Almost surely, 2^27721992604 is an apocalyptic number.

It is an amenable number.

27721992604 is a deficient number, since it is larger than the sum of its proper divisors (20791494460).

27721992604 is a wasteful number, since it uses less digits than its factorization.

27721992604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6930498155 (or 6930498153 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 49.

The spelling of 27721992604 in words is "twenty-seven billion, seven hundred twenty-one million, nine hundred ninety-two thousand, six hundred four".