251113452013 has 8 divisors (see below), whose sum is σ = 252536356800. Its totient is φ = 249690770208.

The previous prime is 251113451999. The next prime is 251113452041. The reversal of 251113452013 is 310254311152.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 251113452013 - 2²¹ = 251111354861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251113452713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2545120 + ... + 2641942.

It is an arithmetic number, because the mean of its divisors is an integer number (31567044600).

Almost surely, 2^251113452013 is an apocalyptic number.

It is an amenable number.

251113452013 is a deficient number, since it is larger than the sum of its proper divisors (1422904787).

251113452013 is a wasteful number, since it uses less digits than its factorization.

251113452013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111491.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 251113452013 its reverse (310254311152), we get a palindrome (561367763165).

The spelling of 251113452013 in words is "two hundred fifty-one billion, one hundred thirteen million, four hundred fifty-two thousand, thirteen".