51319158462540 has 72 divisors (see below), whose sum is σ = 155669439966768. Its totient is φ = 13684992355200.

The previous prime is 51319158462469. The next prime is 51319158462541. The reversal of 51319158462540 is 4526485191315.

51319158462540 is a `hidden beast` number, since 5 + 1 + 3 + 1 + 9 + 1 + 5 + 8 + 4 + 625 + 4 + 0 = 666.

51319158462540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (51319158462541) 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 23 ways as a sum of consecutive naturals, for example, 21113779 + ... + 23418581.

It is an arithmetic number, because the mean of its divisors is an integer number (2162075555094).

Almost surely, 2^{51319158462540} is an apocalyptic number.

It is an amenable number.

51319158462540 is an abundant number, since it is smaller than the sum of its proper divisors (104350281504228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51319158462540 is a wasteful number, since it uses less digits than its factorization.

51319158462540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428519 (or 2428514 counting only the distinct ones).

The product of its (nonzero) digits is 5184000, while the sum is 54.

The spelling of 51319158462540 in words is "fifty-one trillion, three hundred nineteen billion, one hundred fifty-eight million, four hundred sixty-two thousand, five hundred forty".