86947734719 has 2 divisors, whose sum is σ = 86947734720. Its totient is φ = 86947734718.

The previous prime is 86947734701. The next prime is 86947734743. The reversal of 86947734719 is 91743774968.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86947734719 is a prime.

It is a super-2 number, since 2×86947734719² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86947734799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43473867359 + 43473867360.

It is an arithmetic number, because the mean of its divisors is an integer number (43473867360).

Almost surely, 2^86947734719 is an apocalyptic number.

86947734719 is a deficient number, since it is larger than the sum of its proper divisors (1).

86947734719 is an equidigital number, since it uses as much as digits as its factorization.

86947734719 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64012032, while the sum is 65.

The spelling of 86947734719 in words is "eighty-six billion, nine hundred forty-seven million, seven hundred thirty-four thousand, seven hundred nineteen".