20410520136455 has 4 divisors (see below), whose sum is σ = 24492624163752. Its totient is φ = 16328416109160.

The previous prime is 20410520136427. The next prime is 20410520136467. The reversal of 20410520136455 is 55463102501402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20410520136455 - 2²⁸ = 20410251700999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041052013641 + ... + 2041052013650.

It is an arithmetic number, because the mean of its divisors is an integer number (6123156040938).

Almost surely, 2^{20410520136455} is an apocalyptic number.

20410520136455 is a deficient number, since it is larger than the sum of its proper divisors (4082104027297).

20410520136455 is an equidigital number, since it uses as much as digits as its factorization.

20410520136455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4082104027296.

The product of its (nonzero) digits is 144000, while the sum is 38.

Adding to 20410520136455 its reverse (55463102501402), we get a palindrome (75873622637857).

The spelling of 20410520136455 in words is "twenty trillion, four hundred ten billion, five hundred twenty million, one hundred thirty-six thousand, four hundred fifty-five".