251434012215 has 16 divisors (see below), whose sum is σ = 403434072288. Its totient is φ = 133718255616.

The previous prime is 251434012183. The next prime is 251434012223. The reversal of 251434012215 is 512210434152.

251434012215 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 251434012215 - 2⁵ = 251434012183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23737294 + ... + 23747883.

It is an arithmetic number, because the mean of its divisors is an integer number (25214629518).

Almost surely, 2^251434012215 is an apocalyptic number.

251434012215 is a deficient number, since it is larger than the sum of its proper divisors (152000060073).

251434012215 is a wasteful number, since it uses less digits than its factorization.

251434012215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47485538.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 251434012215 its reverse (512210434152), we get a palindrome (763644446367).

The spelling of 251434012215 in words is "two hundred fifty-one billion, four hundred thirty-four million, twelve thousand, two hundred fifteen".