251136226060 has 24 divisors (see below), whose sum is σ = 558408785760. Its totient is φ = 94545402624.

The previous prime is 251136226013. The next prime is 251136226069. The reversal of 251136226060 is 60622631152.

251136226060 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (251136226069) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 369317640 + ... + 369318319.

It is an arithmetic number, because the mean of its divisors is an integer number (23267032740).

Almost surely, 2^251136226060 is an apocalyptic number.

251136226060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

251136226060 is an abundant number, since it is smaller than the sum of its proper divisors (307272559700).

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

251136226060 is a wasteful number, since it uses less digits than its factorization.

251136226060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738635985 (or 738635983 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 251136226060 in words is "two hundred fifty-one billion, one hundred thirty-six million, two hundred twenty-six thousand, sixty".