51514639539 has 48 divisors (see below), whose sum is σ = 77864632704. Its totient is φ = 30037392000.

The previous prime is 51514639457. The next prime is 51514639601. The reversal of 51514639539 is 93593641515.

It is not a de Polignac number, because 51514639539 - 2⁷ = 51514639411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 51514639491 and 51514639500.

It is not an unprimeable number, because it can be changed into a prime (51514639139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4081839 + ... + 4094439.

It is an arithmetic number, because the mean of its divisors is an integer number (1622179848).

Almost surely, 2^51514639539 is an apocalyptic number.

51514639539 is a deficient number, since it is larger than the sum of its proper divisors (26349993165).

51514639539 is a wasteful number, since it uses less digits than its factorization.

51514639539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12768 (or 12725 counting only the distinct ones).

The product of its digits is 2187000, while the sum is 51.

The spelling of 51514639539 in words is "fifty-one billion, five hundred fourteen million, six hundred thirty-nine thousand, five hundred thirty-nine".