20813415354 has 24 divisors (see below), whose sum is σ = 45099280980. Its totient is φ = 6937259328.

The previous prime is 20813415353. The next prime is 20813415361. The reversal of 20813415354 is 45351431802.

20813415354 is a `hidden beast` number, since 2 + 0 + 81 + 3 + 41 + 535 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20542055625 + 271359729 = 143325^2 + 16473^2 .

It is not an unprimeable number, because it can be changed into a prime (20813415353) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 237142 + ... + 312830.

Almost surely, 2^20813415354 is an apocalyptic number.

20813415354 is an abundant number, since it is smaller than the sum of its proper divisors (24285865626).

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

20813415354 is a wasteful number, since it uses less digits than its factorization.

20813415354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90974 (or 90971 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The spelling of 20813415354 in words is "twenty billion, eight hundred thirteen million, four hundred fifteen thousand, three hundred fifty-four".