51106420323165 has 16 divisors (see below), whose sum is σ = 81770604091200. Its totient is φ = 27256646980992.

The previous prime is 51106420323071. The next prime is 51106420323197. The reversal of 51106420323165 is 56132302460115.

It is a happy number.

It is not a de Polignac number, because 51106420323165 - 2⁹ = 51106420322653 is a prime.

It is a super-2 number, since 2×51106420323165² (a number of 28 digits) contains 22 as substring.

It is a congruent 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, 3014520 + ... + 10549889.

It is an arithmetic number, because the mean of its divisors is an integer number (5110662755700).

Almost surely, 2^{51106420323165} is an apocalyptic number.

It is an amenable number.

51106420323165 is a deficient number, since it is larger than the sum of its proper divisors (30664183768035).

51106420323165 is a wasteful number, since it uses less digits than its factorization.

51106420323165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13815596.

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 51106420323165 in words is "fifty-one trillion, one hundred six billion, four hundred twenty million, three hundred twenty-three thousand, one hundred sixty-five".