68022351150991 has 16 divisors (see below), whose sum is σ = 72903913200000. Its totient is φ = 63273568045536.

The previous prime is 68022351150989. The next prime is 68022351151019. The reversal of 68022351150991 is 19905115322086.

It is not a de Polignac number, because 68022351150991 - 2¹ = 68022351150989 is a prime.

It is a super-2 number, since 2×68022351150991² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68022351150191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35669041 + ... + 37527658.

It is an arithmetic number, because the mean of its divisors is an integer number (4556494575000).

Almost surely, 2^{68022351150991} is an apocalyptic number.

68022351150991 is a deficient number, since it is larger than the sum of its proper divisors (4881562049009).

68022351150991 is a wasteful number, since it uses less digits than its factorization.

68022351150991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73197606.

The product of its (nonzero) digits is 1166400, while the sum is 52.

The spelling of 68022351150991 in words is "sixty-eight trillion, twenty-two billion, three hundred fifty-one million, one hundred fifty thousand, nine hundred ninety-one".