86610122623729 has 2 divisors, whose sum is σ = 86610122623730. Its totient is φ = 86610122623728.

The previous prime is 86610122623697. The next prime is 86610122623777. The reversal of 86610122623729 is 92732622101668.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86427236390625 + 182886233104 = 9296625^2 + 427652^2 .

It is a cyclic number.

It is not a de Polignac number, because 86610122623729 - 2⁵ = 86610122623697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86610122623729.

It is not a weakly prime, because it can be changed into another prime (86610122623799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43305061311864 + 43305061311865.

It is an arithmetic number, because the mean of its divisors is an integer number (43305061311865).

Almost surely, 2^{86610122623729} is an apocalyptic number.

It is an amenable number.

86610122623729 is a deficient number, since it is larger than the sum of its proper divisors (1).

86610122623729 is an equidigital number, since it uses as much as digits as its factorization.

86610122623729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5225472, while the sum is 55.

The spelling of 86610122623729 in words is "eighty-six trillion, six hundred ten billion, one hundred twenty-two million, six hundred twenty-three thousand, seven hundred twenty-nine".