251416326432 has 24 divisors (see below), whose sum is σ = 659967857136. Its totient is φ = 83805442112.

The previous prime is 251416326431. The next prime is 251416326433. The reversal of 251416326432 is 234623614152.

It is an interprime number because it is at equal distance from previous prime (251416326431) and next prime (251416326433).

It is a tau number, because it is divible by the number of its divisors (24).

It is not an unprimeable number, because it can be changed into a prime (251416326431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1309459938 + ... + 1309460129.

It is an arithmetic number, because the mean of its divisors is an integer number (27498660714).

Almost surely, 2^251416326432 is an apocalyptic number.

It is an amenable number.

251416326432 is an abundant number, since it is smaller than the sum of its proper divisors (408551530704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

251416326432 is a wasteful number, since it uses less digits than its factorization.

251416326432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2618920080 (or 2618920072 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The spelling of 251416326432 in words is "two hundred fifty-one billion, four hundred sixteen million, three hundred twenty-six thousand, four hundred thirty-two".