20344146152550 has 96 divisors (see below), whose sum is σ = 55048093910784. Its totient is φ = 4931203536000.

The previous prime is 20344146152543. The next prime is 20344146152563. The reversal of 20344146152550 is 5525164144302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10610680 + ... + 12380420.

It is an arithmetic number, because the mean of its divisors is an integer number (573417644904).

Almost surely, 2^{20344146152550} is an apocalyptic number.

20344146152550 is an abundant number, since it is smaller than the sum of its proper divisors (34703947758234).

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

20344146152550 is a wasteful number, since it uses less digits than its factorization.

20344146152550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1776734 (or 1776729 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

The spelling of 20344146152550 in words is "twenty trillion, three hundred forty-four billion, one hundred forty-six million, one hundred fifty-two thousand, five hundred fifty".