1251415441323 has 16 divisors (see below), whose sum is σ = 1963004614560. Its totient is φ = 785201845248.

The previous prime is 1251415441321. The next prime is 1251415441363. The reversal of 1251415441323 is 3231445141521.

1251415441323 is a `hidden beast` number, since 1 + 2 + 51 + 41 + 544 + 1 + 3 + 23 = 666.

It is not a de Polignac number, because 1251415441323 - 2¹ = 1251415441321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1251415441321) 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 15 ways as a sum of consecutive naturals, for example, 1363197190 + ... + 1363198107.

It is an arithmetic number, because the mean of its divisors is an integer number (122687788410).

Almost surely, 2^{1251415441323} is an apocalyptic number.

1251415441323 is a deficient number, since it is larger than the sum of its proper divisors (711589173237).

1251415441323 is a wasteful number, since it uses less digits than its factorization.

1251415441323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2726395323 (or 2726395317 counting only the distinct ones).

The product of its digits is 57600, while the sum is 36.

The spelling of 1251415441323 in words is "one trillion, two hundred fifty-one billion, four hundred fifteen million, four hundred forty-one thousand, three hundred twenty-three".