51465373645831 has 8 divisors (see below), whose sum is σ = 54778050918144. Its totient is φ = 48184396634880.

The previous prime is 51465373645793. The next prime is 51465373645853. The reversal of 51465373645831 is 13854637356415.

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

It is not a de Polignac number, because 51465373645831 - 2⁹ = 51465373645319 is a prime.

It is a super-2 number, since 2×51465373645831² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51465373645831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51465373645031) 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, 7925061990 + ... + 7925068483.

It is an arithmetic number, because the mean of its divisors is an integer number (6847256364768).

Almost surely, 2^{51465373645831} is an apocalyptic number.

51465373645831 is a deficient number, since it is larger than the sum of its proper divisors (3312677272313).

51465373645831 is a wasteful number, since it uses less digits than its factorization.

51465373645831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15850130681.

The product of its digits is 108864000, while the sum is 61.

The spelling of 51465373645831 in words is "fifty-one trillion, four hundred sixty-five billion, three hundred seventy-three million, six hundred forty-five thousand, eight hundred thirty-one".