51348840388538 has 128 divisors (see below), whose sum is σ = 98146099630080. Its totient is φ = 19569332090880.

The previous prime is 51348840388537. The next prime is 51348840388567. The reversal of 51348840388538 is 83588304884315.

It is not an unprimeable number, because it can be changed into a prime (51348840388537) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2749005083 + ... + 2749023761.

It is an arithmetic number, because the mean of its divisors is an integer number (766766403360).

Almost surely, 2^{51348840388538} is an apocalyptic number.

51348840388538 is a deficient number, since it is larger than the sum of its proper divisors (46797259241542).

51348840388538 is a wasteful number, since it uses less digits than its factorization.

51348840388538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20620.

The product of its (nonzero) digits is 353894400, while the sum is 68.

The spelling of 51348840388538 in words is "fifty-one trillion, three hundred forty-eight billion, eight hundred forty million, three hundred eighty-eight thousand, five hundred thirty-eight".