1251882321963 has 16 divisors (see below), whose sum is σ = 2054370990336. Its totient is φ = 660333532320.

The previous prime is 1251882321961. The next prime is 1251882321971. The reversal of 1251882321963 is 3691232881521.

It is not a de Polignac number, because 1251882321963 - 2¹ = 1251882321961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1251882321961) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2292824493 + ... + 2292825038.

It is an arithmetic number, because the mean of its divisors is an integer number (128398186896).

Almost surely, 2^{1251882321963} is an apocalyptic number.

1251882321963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1251882321963 is a deficient number, since it is larger than the sum of its proper divisors (802488668373).

1251882321963 is a wasteful number, since it uses less digits than its factorization.

1251882321963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4585649554.

The product of its digits is 1244160, while the sum is 51.

The spelling of 1251882321963 in words is "one trillion, two hundred fifty-one billion, eight hundred eighty-two million, three hundred twenty-one thousand, nine hundred sixty-three".