20453255235402 has 64 divisors (see below), whose sum is σ = 47590231449600. Its totient is φ = 5791403738880.

The previous prime is 20453255235397. The next prime is 20453255235403.

20453255235402 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (20453255235403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65417002 + ... + 65728917.

It is an arithmetic number, because the mean of its divisors is an integer number (743597366400).

Almost surely, 2^{20453255235402} is an apocalyptic number.

20453255235402 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20453255235402 is an abundant number, since it is smaller than the sum of its proper divisors (27136976214198).

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

20453255235402 is a wasteful number, since it uses less digits than its factorization.

20453255235402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131146091.

The product of its (nonzero) digits is 1440000, while the sum is 42.

The spelling of 20453255235402 in words is "twenty trillion, four hundred fifty-three billion, two hundred fifty-five million, two hundred thirty-five thousand, four hundred two".