86990071723 has 2 divisors, whose sum is σ = 86990071724. Its totient is φ = 86990071722.

The previous prime is 86990071661. The next prime is 86990071801. The reversal of 86990071723 is 32717009968.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86990071723 - 2⁹ = 86990071211 is a prime.

It is not a weakly prime, because it can be changed into another prime (86990075723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43495035861 + 43495035862.

It is an arithmetic number, because the mean of its divisors is an integer number (43495035862).

Almost surely, 2^86990071723 is an apocalyptic number.

86990071723 is a deficient number, since it is larger than the sum of its proper divisors (1).

86990071723 is an equidigital number, since it uses as much as digits as its factorization.

86990071723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1143072, while the sum is 52.

It can be divided in two parts, 869 and 90071723, that multiplied together give a palindrome (78272327287).

The spelling of 86990071723 in words is "eighty-six billion, nine hundred ninety million, seventy-one thousand, seven hundred twenty-three".