20351385202 has 32 divisors (see below), whose sum is σ = 32723449200. Its totient is φ = 9491851264.

The previous prime is 20351385193. The next prime is 20351385211. The reversal of 20351385202 is 20258315302.

It is an interprime number because it is at equal distance from previous prime (20351385193) and next prime (20351385211).

It can be written as a sum of positive squares in 8 ways, for example, as 4818997561 + 15532387641 = 69419^2 + 124629^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1101174 + ... + 1119502.

Almost surely, 2^20351385202 is an apocalyptic number.

20351385202 is a deficient number, since it is larger than the sum of its proper divisors (12372063998).

20351385202 is a wasteful number, since it uses less digits than its factorization.

20351385202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18495 (or 18461 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 20351385202 in words is "twenty billion, three hundred fifty-one million, three hundred eighty-five thousand, two hundred two".