251142251013455 has 16 divisors (see below), whose sum is σ = 305635150985760. Its totient is φ = 198083845588992.

The previous prime is 251142251013439. The next prime is 251142251013461. The reversal of 251142251013455 is 554310152241152.

It is a cyclic number.

It is not a de Polignac number, because 251142251013455 - 2⁴ = 251142251013439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813051074 + ... + 813359903.

It is an arithmetic number, because the mean of its divisors is an integer number (19102196936610).

Almost surely, 2^{251142251013455} is an apocalyptic number.

251142251013455 is a deficient number, since it is larger than the sum of its proper divisors (54492899972305).

251142251013455 is a wasteful number, since it uses less digits than its factorization.

251142251013455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626411418.

The product of its (nonzero) digits is 240000, while the sum is 41.

The spelling of 251142251013455 in words is "two hundred fifty-one trillion, one hundred forty-two billion, two hundred fifty-one million, thirteen thousand, four hundred fifty-five".