251090246428 has 48 divisors (see below), whose sum is σ = 532604911104. Its totient is φ = 101243989440.

The previous prime is 251090246417. The next prime is 251090246431. The reversal of 251090246428 is 824642090152.

251090246428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3156550 + ... + 3235117.

It is an arithmetic number, because the mean of its divisors is an integer number (11095935648).

Almost surely, 2^251090246428 is an apocalyptic number.

251090246428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

251090246428 is an abundant number, since it is smaller than the sum of its proper divisors (281514664676).

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

251090246428 is a wasteful number, since it uses less digits than its factorization.

251090246428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6391762 (or 6391760 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 251090246428 in words is "two hundred fifty-one billion, ninety million, two hundred forty-six thousand, four hundred twenty-eight".