68842784005931 has 16 divisors (see below), whose sum is σ = 78127749080640. Its totient is φ = 60182439715200.

The previous prime is 68842784005913. The next prime is 68842784005939. The reversal of 68842784005931 is 13950048724886.

It is a cyclic number.

It is not a de Polignac number, because 68842784005931 - 2¹⁴ = 68842783989547 is a prime.

It is a super-2 number, since 2×68842784005931² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68842784005939) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1139788736 + ... + 1139849133.

It is an arithmetic number, because the mean of its divisors is an integer number (4882984317540).

It is a 1-persistent number, because it is pandigital, but 2⋅68842784005931 = 137685568011862 is not.

Almost surely, 2^{68842784005931} is an apocalyptic number.

68842784005931 is a deficient number, since it is larger than the sum of its proper divisors (9284965074709).

68842784005931 is a wasteful number, since it uses less digits than its factorization.

68842784005931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279638006.

The product of its (nonzero) digits is 92897280, while the sum is 65.

The spelling of 68842784005931 in words is "sixty-eight trillion, eight hundred forty-two billion, seven hundred eighty-four million, five thousand, nine hundred thirty-one".