20445254154 has 48 divisors (see below), whose sum is σ = 47716722144. Its totient is φ = 6289380000.

The previous prime is 20445254111. The next prime is 20445254201. The reversal of 20445254154 is 45145254402.

20445254154 is a `hidden beast` number, since 2 + 0 + 4 + 452 + 54 + 154 = 666.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1427529 + ... + 1441779.

It is an arithmetic number, because the mean of its divisors is an integer number (994098378).

Almost surely, 2^20445254154 is an apocalyptic number.

20445254154 is an abundant number, since it is smaller than the sum of its proper divisors (27271467990).

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

20445254154 is a wasteful number, since it uses less digits than its factorization.

20445254154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20403 (or 20400 counting only the distinct ones).

The product of its (nonzero) digits is 128000, while the sum is 36.

The spelling of 20445254154 in words is "twenty billion, four hundred forty-five million, two hundred fifty-four thousand, one hundred fifty-four".