20245045052100 has 144 divisors (see below), whose sum is σ = 63936501302016. Its totient is φ = 4905141840000.

The previous prime is 20245045052083. The next prime is 20245045052147. The reversal of 20245045052100 is 125054054202.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 4180575 + ... + 7613625.

It is an arithmetic number, because the mean of its divisors is an integer number (444003481264).

Almost surely, 2^{20245045052100} is an apocalyptic number.

20245045052100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20245045052100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31968250651008).

20245045052100 is an abundant number, since it is smaller than the sum of its proper divisors (43691456249916).

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

20245045052100 is a wasteful number, since it uses less digits than its factorization.

20245045052100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3434866 (or 3434859 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 30.

The spelling of 20245045052100 in words is "twenty trillion, two hundred forty-five billion, forty-five million, fifty-two thousand, one hundred".