51345654315 has 16 divisors (see below), whose sum is σ = 82966445856. Its totient is φ = 27113216000.

The previous prime is 51345654281. The next prime is 51345654317.

It is a happy number.

51345654315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51345654315 - 2¹⁸ = 51345392171 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (51345654317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16944246 + ... + 16947275.

It is an arithmetic number, because the mean of its divisors is an integer number (5185402866).

Almost surely, 2^51345654315 is an apocalyptic number.

51345654315 is a deficient number, since it is larger than the sum of its proper divisors (31620791541).

51345654315 is a wasteful number, since it uses less digits than its factorization.

51345654315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33891630.

The product of its digits is 540000, while the sum is 42.

The spelling of 51345654315 in words is "fifty-one billion, three hundred forty-five million, six hundred fifty-four thousand, three hundred fifteen".