68965009731 has 12 divisors (see below), whose sum is σ = 99695264760. Its totient is φ = 45940147200.

The previous prime is 68965009721. The next prime is 68965009739. The reversal of 68965009731 is 13790056986.

68965009731 is a `hidden beast` number, since 68 + 9 + 6 + 500 + 9 + 73 + 1 = 666.

It is not a de Polignac number, because 68965009731 - 2⁶ = 68965009667 is a prime.

It is a super-2 number, since 2×68965009731² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68965009739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3031870 + ... + 3054531.

It is an arithmetic number, because the mean of its divisors is an integer number (8307938730).

Almost surely, 2^68965009731 is an apocalyptic number.

68965009731 is a deficient number, since it is larger than the sum of its proper divisors (30730255029).

68965009731 is a wasteful number, since it uses less digits than its factorization.

68965009731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6087666 (or 6087663 counting only the distinct ones).

The product of its (nonzero) digits is 2449440, while the sum is 54.

The spelling of 68965009731 in words is "sixty-eight billion, nine hundred sixty-five million, nine thousand, seven hundred thirty-one".