51340351856155 has 16 divisors (see below), whose sum is σ = 61667684398944. Its totient is φ = 41032788509440.

The previous prime is 51340351856149. The next prime is 51340351856231. The reversal of 51340351856155 is 55165815304315.

It is a happy number.

It is not a de Polignac number, because 51340351856155 - 2³ = 51340351856147 is a prime.

It is a super-2 number, since 2×51340351856155² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26261940 + ... + 28149070.

It is an arithmetic number, because the mean of its divisors is an integer number (3854230274934).

Almost surely, 2^{51340351856155} is an apocalyptic number.

51340351856155 is a deficient number, since it is larger than the sum of its proper divisors (10327332542789).

51340351856155 is a wasteful number, since it uses less digits than its factorization.

51340351856155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1892366.

The product of its (nonzero) digits is 5400000, while the sum is 52.

The spelling of 51340351856155 in words is "fifty-one trillion, three hundred forty billion, three hundred fifty-one million, eight hundred fifty-six thousand, one hundred fifty-five".