201256313155 has 64 divisors (see below), whose sum is σ = 262275148800. Its totient is φ = 147855628800.

The previous prime is 201256313149. The next prime is 201256313171. The reversal of 201256313155 is 551313652102.

It is not a de Polignac number, because 201256313155 - 2³ = 201256313147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201256313155.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 105867705 + ... + 105869605.

It is an arithmetic number, because the mean of its divisors is an integer number (4098049200).

Almost surely, 2^201256313155 is an apocalyptic number.

201256313155 is a deficient number, since it is larger than the sum of its proper divisors (61018835645).

201256313155 is a wasteful number, since it uses less digits than its factorization.

201256313155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its (nonzero) digits is 27000, while the sum is 34.

Adding to 201256313155 its reverse (551313652102), we get a palindrome (752569965257).

The spelling of 201256313155 in words is "two hundred one billion, two hundred fifty-six million, three hundred thirteen thousand, one hundred fifty-five".