20355470136 has 48 divisors (see below), whose sum is σ = 55140588360. Its totient is φ = 6783779520.

The previous prime is 20355470111. The next prime is 20355470153. The reversal of 20355470136 is 63107455302.

20355470136 is a `hidden beast` number, since 2 + 0 + 3 + 55 + 470 + 136 = 666.

It is a super-3 number, since 3×20355470136³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20355470136.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 365926 + ... + 417866.

Almost surely, 2^20355470136 is an apocalyptic number.

It is an amenable number.

20355470136 is an abundant number, since it is smaller than the sum of its proper divisors (34785118224).

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

20355470136 is a wasteful number, since it uses less digits than its factorization.

20355470136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57396 (or 57389 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 36.

The spelling of 20355470136 in words is "twenty billion, three hundred fifty-five million, four hundred seventy thousand, one hundred thirty-six".