20904852402 has 24 divisors (see below), whose sum is σ = 51764396736. Its totient is φ = 5972814936.

The previous prime is 20904852401. The next prime is 20904852403. The reversal of 20904852402 is 20425840902.

20904852402 is a `hidden beast` number, since 2 + 0 + 90 + 48 + 524 + 0 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (20904852401) and next prime (20904852403).

It is not an unprimeable number, because it can be changed into a prime (20904852401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82955638 + ... + 82955889.

It is an arithmetic number, because the mean of its divisors is an integer number (2156849864).

Almost surely, 2^20904852402 is an apocalyptic number.

20904852402 is an abundant number, since it is smaller than the sum of its proper divisors (30859544334).

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

20904852402 is a wasteful number, since it uses less digits than its factorization.

20904852402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165911542 (or 165911539 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The spelling of 20904852402 in words is "twenty billion, nine hundred four million, eight hundred fifty-two thousand, four hundred two".