245553020053021 has 16 divisors (see below), whose sum is σ = 254429748518400. Its totient is φ = 236833566959808.

The previous prime is 245553020052973. The next prime is 245553020053039. The reversal of 245553020053021 is 120350020355542.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245553020053021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245553020051021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 271187380 + ... + 272091346.

It is an arithmetic number, because the mean of its divisors is an integer number (15901859282400).

Almost surely, 2^{245553020053021} is an apocalyptic number.

It is an amenable number.

245553020053021 is a deficient number, since it is larger than the sum of its proper divisors (8876728465379).

245553020053021 is an equidigital number, since it uses as much as digits as its factorization.

245553020053021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990948.

The product of its (nonzero) digits is 180000, while the sum is 37.

The spelling of 245553020053021 in words is "two hundred forty-five trillion, five hundred fifty-three billion, twenty million, fifty-three thousand, twenty-one".