202551120355 has 4 divisors (see below), whose sum is σ = 243061344432. Its totient is φ = 162040896280.

The previous prime is 202551120349. The next prime is 202551120427. The reversal of 202551120355 is 553021155202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 553021155202 = 2 ⋅276510577601.

It is not a de Polignac number, because 202551120355 - 2⁵ = 202551120323 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian 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, 20255112031 + ... + 20255112040.

It is an arithmetic number, because the mean of its divisors is an integer number (60765336108).

Almost surely, 2^202551120355 is an apocalyptic number.

202551120355 is a deficient number, since it is larger than the sum of its proper divisors (40510224077).

202551120355 is an equidigital number, since it uses as much as digits as its factorization.

202551120355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40510224076.

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 202551120355 its reverse (553021155202), we get a palindrome (755572275557).

The spelling of 202551120355 in words is "two hundred two billion, five hundred fifty-one million, one hundred twenty thousand, three hundred fifty-five".