251124202013 has 16 divisors (see below), whose sum is σ = 257928053760. Its totient is φ = 244408157616.

The previous prime is 251124202009. The next prime is 251124202019. The reversal of 251124202013 is 310202421152.

It is a cyclic number.

It is not a de Polignac number, because 251124202013 - 2² = 251124202009 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 251124202013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251124202019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10865756 + ... + 10888842.

It is an arithmetic number, because the mean of its divisors is an integer number (16120503360).

Almost surely, 2^251124202013 is an apocalyptic number.

It is an amenable number.

251124202013 is a deficient number, since it is larger than the sum of its proper divisors (6803851747).

251124202013 is a wasteful number, since it uses less digits than its factorization.

251124202013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24976.

The product of its (nonzero) digits is 960, while the sum is 23.

Adding to 251124202013 its reverse (310202421152), we get a palindrome (561326623165).

The spelling of 251124202013 in words is "two hundred fifty-one billion, one hundred twenty-four million, two hundred two thousand, thirteen".