51378287315 has 64 divisors (see below), whose sum is σ = 70188301440. Its totient is φ = 35871621120.

The previous prime is 51378287251. The next prime is 51378287341.

51378287315 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 51378287315 - 2⁶ = 51378287251 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 16150025 + ... + 16153205.

It is an arithmetic number, because the mean of its divisors is an integer number (1096692210).

Almost surely, 2^51378287315 is an apocalyptic number.

51378287315 is a deficient number, since it is larger than the sum of its proper divisors (18810014125).

51378287315 is a wasteful number, since it uses less digits than its factorization.

51378287315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3432.

The product of its digits is 1411200, while the sum is 50.

The spelling of 51378287315 in words is "fifty-one billion, three hundred seventy-eight million, two hundred eighty-seven thousand, three hundred fifteen".