68731013785 has 8 divisors (see below), whose sum is σ = 94259676096. Its totient is φ = 47129838000.

The previous prime is 68731013723. The next prime is 68731013789. The reversal of 68731013785 is 58731013786.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68731013785 - 2¹⁵ = 68730981017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68731013789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981871591 + ... + 981871660.

It is an arithmetic number, because the mean of its divisors is an integer number (11782459512).

Almost surely, 2^68731013785 is an apocalyptic number.

It is an amenable number.

68731013785 is a deficient number, since it is larger than the sum of its proper divisors (25528662311).

68731013785 is a wasteful number, since it uses less digits than its factorization.

68731013785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963743263.

The product of its (nonzero) digits is 846720, while the sum is 49.

Subtracting from 68731013785 its reverse (58731013786), we obtain a palindrome (9999999999).

The spelling of 68731013785 in words is "sixty-eight billion, seven hundred thirty-one million, thirteen thousand, seven hundred eighty-five".