51261500351346 has 16 divisors (see below), whose sum is σ = 102530194965408. Its totient is φ = 17085967740000.

The previous prime is 51261500351311. The next prime is 51261500351351. The reversal of 51261500351346 is 64315300516215.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 51261500351298 and 51261500351307.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299668315 + ... + 299839326.

It is an arithmetic number, because the mean of its divisors is an integer number (6408137185338).

Almost surely, 2^{51261500351346} is an apocalyptic number.

51261500351346 is an abundant number, since it is smaller than the sum of its proper divisors (51268694614062).

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

51261500351346 is a wasteful number, since it uses less digits than its factorization.

51261500351346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599521897.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 51261500351346 in words is "fifty-one trillion, two hundred sixty-one billion, five hundred million, three hundred fifty-one thousand, three hundred forty-six".