18720727002 has 12 divisors (see below), whose sum is σ = 40561575210. Its totient is φ = 6240242328.

The previous prime is 18720726979. The next prime is 18720727031. The reversal of 18720727002 is 20072702781.

18720727002 is a `hidden beast` number, since 187 + 207 + 270 + 0 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11427396201 + 7293330801 = 106899^2 + 85401^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 520020177 + ... + 520020212.

Almost surely, 2^18720727002 is an apocalyptic number.

18720727002 is an abundant number, since it is smaller than the sum of its proper divisors (21840848208).

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

18720727002 is a wasteful number, since it uses less digits than its factorization.

18720727002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040040397 (or 1040040394 counting only the distinct ones).

The product of its (nonzero) digits is 21952, while the sum is 36.

The spelling of 18720727002 in words is "eighteen billion, seven hundred twenty million, seven hundred twenty-seven thousand, two".