251242653063 has 8 divisors (see below), whose sum is σ = 335108461168. Its totient is φ = 167435973504.

The previous prime is 251242653059. The next prime is 251242653173. The reversal of 251242653063 is 360356242152.

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

It is not a de Polignac number, because 251242653063 - 2² = 251242653059 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 (251242651063) 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, 14772220 + ... + 14789217.

It is an arithmetic number, because the mean of its divisors is an integer number (41888557646).

Almost surely, 2^251242653063 is an apocalyptic number.

251242653063 is a deficient number, since it is larger than the sum of its proper divisors (83865808105).

251242653063 is a wasteful number, since it uses less digits than its factorization.

251242653063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29564273.

The product of its (nonzero) digits is 259200, while the sum is 39.

The spelling of 251242653063 in words is "two hundred fifty-one billion, two hundred forty-two million, six hundred fifty-three thousand, sixty-three".