86744973793 has 2 divisors, whose sum is σ = 86744973794. Its totient is φ = 86744973792.

The previous prime is 86744973773. The next prime is 86744973881. The reversal of 86744973793 is 39737944768.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59864387584 + 26880586209 = 244672^2 + 163953^2 .

It is a cyclic number.

It is not a de Polignac number, because 86744973793 - 2⁵ = 86744973761 is a prime.

It is not a weakly prime, because it can be changed into another prime (86744973773) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43372486896 + 43372486897.

It is an arithmetic number, because the mean of its divisors is an integer number (43372486897).

Almost surely, 2^86744973793 is an apocalyptic number.

It is an amenable number.

86744973793 is a deficient number, since it is larger than the sum of its proper divisors (1).

86744973793 is an equidigital number, since it uses as much as digits as its factorization.

86744973793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192036096, while the sum is 67.

The spelling of 86744973793 in words is "eighty-six billion, seven hundred forty-four million, nine hundred seventy-three thousand, seven hundred ninety-three".