84722559679 has 2 divisors, whose sum is σ = 84722559680. Its totient is φ = 84722559678.

The previous prime is 84722559641. The next prime is 84722559689. The reversal of 84722559679 is 97695522748.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84722559679 - 2²¹ = 84720462527 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84722559679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84722559689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42361279839 + 42361279840.

It is an arithmetic number, because the mean of its divisors is an integer number (42361279840).

Almost surely, 2^84722559679 is an apocalyptic number.

84722559679 is a deficient number, since it is larger than the sum of its proper divisors (1).

84722559679 is an equidigital number, since it uses as much as digits as its factorization.

84722559679 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 76204800, while the sum is 64.

The spelling of 84722559679 in words is "eighty-four billion, seven hundred twenty-two million, five hundred fifty-nine thousand, six hundred seventy-nine".