20204989602 has 32 divisors (see below), whose sum is σ = 46640098944. Its totient is φ = 5715696000.

The previous prime is 20204989579. The next prime is 20204989621. The reversal of 20204989602 is 20698940202.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2377299 + ... + 2385782.

It is an arithmetic number, because the mean of its divisors is an integer number (1457503092).

Almost surely, 2^20204989602 is an apocalyptic number.

20204989602 is an abundant number, since it is smaller than the sum of its proper divisors (26435109342).

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

20204989602 is a wasteful number, since it uses less digits than its factorization.

20204989602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763194.

The product of its (nonzero) digits is 124416, while the sum is 42.

The spelling of 20204989602 in words is "twenty billion, two hundred four million, nine hundred eighty-nine thousand, six hundred two".