251098203132 has 144 divisors (see below), whose sum is σ = 738055019520. Its totient is φ = 70491447936.

The previous prime is 251098203131. The next prime is 251098203143. The reversal of 251098203132 is 231302890152.

251098203132 is a `hidden beast` number, since 2 + 510 + 9 + 8 + 2 + 0 + 3 + 132 = 666.

It is a super-2 number, since 2×251098203132² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251098203131) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 50652798 + ... + 50657754.

It is an arithmetic number, because the mean of its divisors is an integer number (5125382080).

Almost surely, 2^251098203132 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 251098203132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369027509760).

251098203132 is an abundant number, since it is smaller than the sum of its proper divisors (486956816388).

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

251098203132 is a wasteful number, since it uses less digits than its factorization.

251098203132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8440 (or 8435 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 251098203132 in words is "two hundred fifty-one billion, ninety-eight million, two hundred three thousand, one hundred thirty-two".