1251391676160 has 72 divisors (see below), whose sum is σ = 3996632178000. Its totient is φ = 333704445952.

The previous prime is 1251391676149. The next prime is 1251391676189. The reversal of 1251391676160 is 616761931521.

It is a happy number.

It is a super-2 number, since 2×1251391676160² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162937785 + ... + 162945464.

It is an arithmetic number, because the mean of its divisors is an integer number (55508780250).

Almost surely, 2^{1251391676160} is an apocalyptic number.

1251391676160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1251391676160 is an abundant number, since it is smaller than the sum of its proper divisors (2745240501840).

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

1251391676160 is an equidigital number, since it uses as much as digits as its factorization.

1251391676160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325883273 (or 325883259 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 48.

The spelling of 1251391676160 in words is "one trillion, two hundred fifty-one billion, three hundred ninety-one million, six hundred seventy-six thousand, one hundred sixty".