68352581016091 has 16 divisors (see below), whose sum is σ = 73013556038400. Its totient is φ = 63846549043200.

The previous prime is 68352581016043. The next prime is 68352581016163. The reversal of 68352581016091 is 19061018525386.

It is a cyclic number.

It is not a de Polignac number, because 68352581016091 - 2²⁵ = 68352547461659 is a prime.

It is a super-2 number, since 2×68352581016091² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68352581026091) 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, 9147250 + ... + 14845111.

It is an arithmetic number, because the mean of its divisors is an integer number (4563347252400).

Almost surely, 2^{68352581016091} is an apocalyptic number.

68352581016091 is a deficient number, since it is larger than the sum of its proper divisors (4660975022309).

68352581016091 is a wasteful number, since it uses less digits than its factorization.

68352581016091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23995590.

The product of its (nonzero) digits is 3110400, while the sum is 55.

The spelling of 68352581016091 in words is "sixty-eight trillion, three hundred fifty-two billion, five hundred eighty-one million, sixteen thousand, ninety-one".