68167007999 has 4 divisors (see below), whose sum is σ = 68988297336. Its totient is φ = 67345718664.

The previous prime is 68167007981. The next prime is 68167008037. The reversal of 68167007999 is 99970076186.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68167007999 - 2³² = 63872040703 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68167007929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 410644544 + ... + 410644709.

It is an arithmetic number, because the mean of its divisors is an integer number (17247074334).

Almost surely, 2^68167007999 is an apocalyptic number.

68167007999 is a deficient number, since it is larger than the sum of its proper divisors (821289337).

68167007999 is an equidigital number, since it uses as much as digits as its factorization.

68167007999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821289336.

The product of its (nonzero) digits is 10287648, while the sum is 62.

The spelling of 68167007999 in words is "sixty-eight billion, one hundred sixty-seven million, seven thousand, nine hundred ninety-nine".