51323242422491 has 16 divisors (see below), whose sum is σ = 57698082763776. Its totient is φ = 45296802145056.

The previous prime is 51323242422451. The next prime is 51323242422493. The reversal of 51323242422491 is 19422424232315.

It is a cyclic number.

It is not a de Polignac number, because 51323242422491 - 2¹⁰ = 51323242421467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51323242422493) 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, 34696415 + ... + 36145368.

It is an arithmetic number, because the mean of its divisors is an integer number (3606130172736).

Almost surely, 2^{51323242422491} is an apocalyptic number.

51323242422491 is a deficient number, since it is larger than the sum of its proper divisors (6374840341285).

51323242422491 is a wasteful number, since it uses less digits than its factorization.

51323242422491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70844242.

The product of its digits is 829440, while the sum is 44.

The spelling of 51323242422491 in words is "fifty-one trillion, three hundred twenty-three billion, two hundred forty-two million, four hundred twenty-two thousand, four hundred ninety-one".