251129122116503 has 16 divisors (see below), whose sum is σ = 260486710788096. Its totient is φ = 241852632390720.

The previous prime is 251129122116497. The next prime is 251129122116533. The reversal of 251129122116503 is 305611221921152.

It is a cyclic number.

It is not a de Polignac number, because 251129122116503 - 2⁸ = 251129122116247 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 (251129122116533) 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, 15429551 + ... + 27208992.

It is an arithmetic number, because the mean of its divisors is an integer number (16280419424256).

Almost surely, 2^{251129122116503} is an apocalyptic number.

251129122116503 is a deficient number, since it is larger than the sum of its proper divisors (9357588671593).

251129122116503 is a wasteful number, since it uses less digits than its factorization.

251129122116503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42639494.

The product of its (nonzero) digits is 64800, while the sum is 41.

The spelling of 251129122116503 in words is "two hundred fifty-one trillion, one hundred twenty-nine billion, one hundred twenty-two million, one hundred sixteen thousand, five hundred three".