20452115154 has 32 divisors (see below), whose sum is σ = 42717536640. Its totient is φ = 6515638272.

The previous prime is 20452115143. The next prime is 20452115171. The reversal of 20452115154 is 45151125402.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 110802 + ... + 230610.

It is an arithmetic number, because the mean of its divisors is an integer number (1334923020).

Almost surely, 2^20452115154 is an apocalyptic number.

20452115154 is an abundant number, since it is smaller than the sum of its proper divisors (22265421486).

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

20452115154 is a wasteful number, since it uses less digits than its factorization.

20452115154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121074.

The product of its (nonzero) digits is 8000, while the sum is 30.

The spelling of 20452115154 in words is "twenty billion, four hundred fifty-two million, one hundred fifteen thousand, one hundred fifty-four".