251142251013442 has 32 divisors (see below), whose sum is σ = 403712853872832. Its totient is φ = 116750795103744.

The previous prime is 251142251013439. The next prime is 251142251013461. The reversal of 251142251013442 is 244310152241152.

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, 29632293 + ... + 37153159.

It is an arithmetic number, because the mean of its divisors is an integer number (12616026683526).

Almost surely, 2^{251142251013442} is an apocalyptic number.

251142251013442 is a deficient number, since it is larger than the sum of its proper divisors (152570602859390).

251142251013442 is a wasteful number, since it uses less digits than its factorization.

251142251013442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7532802.

The product of its (nonzero) digits is 76800, while the sum is 37.

The spelling of 251142251013442 in words is "two hundred fifty-one trillion, one hundred forty-two billion, two hundred fifty-one million, thirteen thousand, four hundred forty-two".