251364650213 has 8 divisors (see below), whose sum is σ = 253929595680. Its totient is φ = 248801198800.

The previous prime is 251364650183. The next prime is 251364650237. The reversal of 251364650213 is 312056463152.

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 251364650213 - 2⁸ = 251364649957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251364650293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33743 + ... + 709836.

It is an arithmetic number, because the mean of its divisors is an integer number (31741199460).

Almost surely, 2^251364650213 is an apocalyptic number.

It is an amenable number.

251364650213 is a deficient number, since it is larger than the sum of its proper divisors (2564945467).

251364650213 is a wasteful number, since it uses less digits than its factorization.

251364650213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747027.

The product of its (nonzero) digits is 129600, while the sum is 38.

The spelling of 251364650213 in words is "two hundred fifty-one billion, three hundred sixty-four million, six hundred fifty thousand, two hundred thirteen".