251151032112 has 40 divisors (see below), whose sum is σ = 652067193600. Its totient is φ = 83296319040.

The previous prime is 251151032053. The next prime is 251151032113. The reversal of 251151032112 is 211230151152.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (251151032113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13136964 + ... + 13156067.

It is an arithmetic number, because the mean of its divisors is an integer number (16301679840).

Almost surely, 2^251151032112 is an apocalyptic number.

It is an amenable number.

251151032112 is an abundant number, since it is smaller than the sum of its proper divisors (400916161488).

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

251151032112 is a wasteful number, since it uses less digits than its factorization.

251151032112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26293241 (or 26293235 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 24.

Adding to 251151032112 its reverse (211230151152), we get a palindrome (462381183264).

The spelling of 251151032112 in words is "two hundred fifty-one billion, one hundred fifty-one million, thirty-two thousand, one hundred twelve".