250989342138 has 12 divisors (see below), whose sum is σ = 543810241338. Its totient is φ = 83663114040.

The previous prime is 250989342103. The next prime is 250989342157. The reversal of 250989342138 is 831243989052.

250989342138 is a `hidden beast` number, since 2 + 509 + 8 + 93 + 42 + 1 + 3 + 8 = 666.

250989342138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 243420864129 + 7568478009 = 493377^2 + 86997^2 .

It is a super-2 number, since 2×250989342138² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6971926153 + ... + 6971926188.

Almost surely, 2^250989342138 is an apocalyptic number.

250989342138 is an abundant number, since it is smaller than the sum of its proper divisors (292820899200).

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

250989342138 is a wasteful number, since it uses less digits than its factorization.

250989342138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13943852349 (or 13943852346 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 250989342138 in words is "two hundred fifty billion, nine hundred eighty-nine million, three hundred forty-two thousand, one hundred thirty-eight".