68161193479 has 2 divisors, whose sum is σ = 68161193480. Its totient is φ = 68161193478.

The previous prime is 68161193461. The next prime is 68161193491. The reversal of 68161193479 is 97439116186.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68161193479 - 2¹⁹ = 68160669191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68161190479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34080596739 + 34080596740.

It is an arithmetic number, because the mean of its divisors is an integer number (34080596740).

Almost surely, 2^68161193479 is an apocalyptic number.

68161193479 is a deficient number, since it is larger than the sum of its proper divisors (1).

68161193479 is an equidigital number, since it uses as much as digits as its factorization.

68161193479 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 55.

The spelling of 68161193479 in words is "sixty-eight billion, one hundred sixty-one million, one hundred ninety-three thousand, four hundred seventy-nine".