27720290602 has 4 divisors (see below), whose sum is σ = 41580435906. Its totient is φ = 13860145300.

The previous prime is 27720290579. The next prime is 27720290629. The reversal of 27720290602 is 20609202772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23003485561 + 4716805041 = 151669^2 + 68679^2 .

It is a super-2 number, since 2×27720290602² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6930072649 + ... + 6930072652.

Almost surely, 2^27720290602 is an apocalyptic number.

27720290602 is a deficient number, since it is larger than the sum of its proper divisors (13860145304).

27720290602 is a wasteful number, since it uses less digits than its factorization.

27720290602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13860145303.

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 27720290602 in words is "twenty-seven billion, seven hundred twenty million, two hundred ninety thousand, six hundred two".