51439488493415 has 12 divisors (see below), whose sum is σ = 67849110443352. Its totient is φ = 37410537085680.

The previous prime is 51439488493397. The next prime is 51439488493427.

51439488493415 is nontrivially palindromic in base 10.

51439488493415 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-51439488493415 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42511973357 + ... + 42511974566.

It is an arithmetic number, because the mean of its divisors is an integer number (5654092536946).

Almost surely, 2^{51439488493415} is an apocalyptic number.

51439488493415 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51439488493415 is a deficient number, since it is larger than the sum of its proper divisors (16409621949937).

51439488493415 is a wasteful number, since it uses less digits than its factorization.

51439488493415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85023947950 (or 85023947939 counting only the distinct ones).

The product of its digits is 298598400, while the sum is 68.

The spelling of 51439488493415 in words is "fifty-one trillion, four hundred thirty-nine billion, four hundred eighty-eight million, four hundred ninety-three thousand, four hundred fifteen".