68651732013 has 32 divisors (see below), whose sum is σ = 94274813952. Its totient is φ = 44423870400.

The previous prime is 68651731961. The next prime is 68651732053. The reversal of 68651732013 is 31023715686.

It is not a de Polignac number, because 68651732013 - 2⁹ = 68651731501 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68651732053) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3533995 + ... + 3553367.

It is an arithmetic number, because the mean of its divisors is an integer number (2946087936).

Almost surely, 2^68651732013 is an apocalyptic number.

It is an amenable number.

68651732013 is a deficient number, since it is larger than the sum of its proper divisors (25623081939).

68651732013 is a wasteful number, since it uses less digits than its factorization.

68651732013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19705.

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 68651732013 in words is "sixty-eight billion, six hundred fifty-one million, seven hundred thirty-two thousand, thirteen".