251350135335132 has 24 divisors (see below), whose sum is σ = 586499261838336. Its totient is φ = 83781148056048.

The previous prime is 251350135335071. The next prime is 251350135335179. The reversal of 251350135335132 is 231533531053152.

It is a congruent number.

It is an unprimeable number.

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, 278329038 + ... + 279230645.

It is an arithmetic number, because the mean of its divisors is an integer number (24437469243264).

Almost surely, 2^{251350135335132} is an apocalyptic number.

It is an amenable number.

251350135335132 is an abundant number, since it is smaller than the sum of its proper divisors (335149126503204).

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

251350135335132 is a wasteful number, since it uses less digits than its factorization.

251350135335132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557597257 (or 557597255 counting only the distinct ones).

The product of its (nonzero) digits is 607500, while the sum is 42.

Adding to 251350135335132 its reverse (231533531053152), we get a palindrome (482883666388284).

The spelling of 251350135335132 in words is "two hundred fifty-one trillion, three hundred fifty billion, one hundred thirty-five million, three hundred thirty-five thousand, one hundred thirty-two".