251816399096 has 8 divisors (see below), whose sum is σ = 472155748320. Its totient is φ = 125908199544.

The previous prime is 251816399071. The next prime is 251816399123. The reversal of 251816399096 is 690993618152.

251816399096 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×251816399096² (a number of 24 digits) contains 22 as substring.

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 as a sum of consecutive naturals, namely, 15738524936 + ... + 15738524951.

It is an arithmetic number, because the mean of its divisors is an integer number (59019468540).

Almost surely, 2^251816399096 is an apocalyptic number.

It is an amenable number.

251816399096 is a deficient number, since it is larger than the sum of its proper divisors (220339349224).

251816399096 is a wasteful number, since it uses less digits than its factorization.

251816399096 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31477049893 (or 31477049889 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 59.

The spelling of 251816399096 in words is "two hundred fifty-one billion, eight hundred sixteen million, three hundred ninety-nine thousand, ninety-six".