51744217823831 has 8 divisors (see below), whose sum is σ = 55724656719984. Its totient is φ = 47763795277440.

The previous prime is 51744217823827. The next prime is 51744217823843. The reversal of 51744217823831 is 13832871244715.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51744217823831 - 2² = 51744217823827 is a prime.

It is a super-2 number, since 2×51744217823831² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51744213823831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2932175 + ... + 10587071.

It is an arithmetic number, because the mean of its divisors is an integer number (6965582089998).

Almost surely, 2^{51744217823831} is an apocalyptic number.

51744217823831 is a deficient number, since it is larger than the sum of its proper divisors (3980438896153).

51744217823831 is a wasteful number, since it uses less digits than its factorization.

51744217823831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8174881.

The product of its digits is 9031680, while the sum is 56.

The spelling of 51744217823831 in words is "fifty-one trillion, seven hundred forty-four billion, two hundred seventeen million, eight hundred twenty-three thousand, eight hundred thirty-one".