251630102013 has 16 divisors (see below), whose sum is σ = 339659360640. Its totient is φ = 165681376256.

The previous prime is 251630101973. The next prime is 251630102023. The reversal of 251630102013 is 310201036152.

It is a cyclic number.

It is not a de Polignac number, because 251630102013 - 2⁶ = 251630101949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251630102023) 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, 294420 + ... + 768077.

It is an arithmetic number, because the mean of its divisors is an integer number (21228710040).

Almost surely, 2^251630102013 is an apocalyptic number.

It is an amenable number.

251630102013 is a deficient number, since it is larger than the sum of its proper divisors (88029258627).

251630102013 is a wasteful number, since it uses less digits than its factorization.

251630102013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063476.

The product of its (nonzero) digits is 1080, while the sum is 24.

Adding to 251630102013 its reverse (310201036152), we get a palindrome (561831138165).

The spelling of 251630102013 in words is "two hundred fifty-one billion, six hundred thirty million, one hundred two thousand, thirteen".