68754821479 has 2 divisors, whose sum is σ = 68754821480. Its totient is φ = 68754821478.

The previous prime is 68754821467. The next prime is 68754821489. The reversal of 68754821479 is 97412845786.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68754821479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68754821489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34377410739 + 34377410740.

It is an arithmetic number, because the mean of its divisors is an integer number (34377410740).

Almost surely, 2^68754821479 is an apocalyptic number.

68754821479 is a deficient number, since it is larger than the sum of its proper divisors (1).

68754821479 is an equidigital number, since it uses as much as digits as its factorization.

68754821479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27095040, while the sum is 61.

The spelling of 68754821479 in words is "sixty-eight billion, seven hundred fifty-four million, eight hundred twenty-one thousand, four hundred seventy-nine".