50686906738517 has 6 divisors (see below), whose sum is σ = 58962320083638. Its totient is φ = 43445920061544.

The previous prime is 50686906738511. The next prime is 50686906738519. The reversal of 50686906738517 is 71583760968605.

50686906738517 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 41983026083761 + 8703880654756 = 6479431^2 + 2950234^2 .

It is not a de Polignac number, because 50686906738517 - 2³⁸ = 50412028831573 is a prime.

It is a super-2 number, since 2×50686906738517² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (50686906738511) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 517213334018 + ... + 517213334115.

It is an arithmetic number, because the mean of its divisors is an integer number (9827053347273).

Almost surely, 2^{50686906738517} is an apocalyptic number.

It is an amenable number.

50686906738517 is a deficient number, since it is larger than the sum of its proper divisors (8275413345121).

50686906738517 is a wasteful number, since it uses less digits than its factorization.

50686906738517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034426668147 (or 1034426668140 counting only the distinct ones).

The product of its (nonzero) digits is 457228800, while the sum is 71.

The spelling of 50686906738517 in words is "fifty trillion, six hundred eighty-six billion, nine hundred six million, seven hundred thirty-eight thousand, five hundred seventeen".