68835620757 has 16 divisors (see below), whose sum is σ = 93552175808. Its totient is φ = 45011687040.

The previous prime is 68835620717. The next prime is 68835620767. The reversal of 68835620757 is 75702653886.

It is a de Polignac number, because none of the positive numbers 2^k-68835620757 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68835620697 and 68835620706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68835620717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 828643 + ... + 907920.

It is an arithmetic number, because the mean of its divisors is an integer number (5847010988).

Almost surely, 2^68835620757 is an apocalyptic number.

It is an amenable number.

68835620757 is a deficient number, since it is larger than the sum of its proper divisors (24716555051).

68835620757 is a wasteful number, since it uses less digits than its factorization.

68835620757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1736820.

The product of its (nonzero) digits is 16934400, while the sum is 57.

The spelling of 68835620757 in words is "sixty-eight billion, eight hundred thirty-five million, six hundred twenty thousand, seven hundred fifty-seven".