84186785953 has 2 divisors, whose sum is σ = 84186785954. Its totient is φ = 84186785952.

The previous prime is 84186785941. The next prime is 84186785957. The reversal of 84186785953 is 35958768148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77546654784 + 6640131169 = 278472^2 + 81487^2 .

It is a cyclic number.

It is not a de Polignac number, because 84186785953 - 2³³ = 75596851361 is a prime.

It is not a weakly prime, because it can be changed into another prime (84186785957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42093392976 + 42093392977.

It is an arithmetic number, because the mean of its divisors is an integer number (42093392977).

Almost surely, 2^84186785953 is an apocalyptic number.

It is an amenable number.

84186785953 is a deficient number, since it is larger than the sum of its proper divisors (1).

84186785953 is an equidigital number, since it uses as much as digits as its factorization.

84186785953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58060800, while the sum is 64.

The spelling of 84186785953 in words is "eighty-four billion, one hundred eighty-six million, seven hundred eighty-five thousand, nine hundred fifty-three".