251345100030 has 64 divisors (see below), whose sum is σ = 607369674240. Its totient is φ = 66566155904.

The previous prime is 251345100023. The next prime is 251345100031. The reversal of 251345100030 is 30001543152.

251345100030 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251345100031) 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 31 ways as a sum of consecutive naturals, for example, 4250527 + ... + 4309253.

It is an arithmetic number, because the mean of its divisors is an integer number (9490151160).

Almost surely, 2^251345100030 is an apocalyptic number.

251345100030 is an abundant number, since it is smaller than the sum of its proper divisors (356024574210).

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

251345100030 is a wasteful number, since it uses less digits than its factorization.

251345100030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59713.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 251345100030 its reverse (30001543152), we get a palindrome (281346643182).

The spelling of 251345100030 in words is "two hundred fifty-one billion, three hundred forty-five million, one hundred thousand, thirty".