84900168637 has 2 divisors, whose sum is σ = 84900168638. Its totient is φ = 84900168636.

The previous prime is 84900168599. The next prime is 84900168653. The reversal of 84900168637 is 73686100948.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47969322361 + 36930846276 = 219019^2 + 192174^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84900168637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84900168037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42450084318 + 42450084319.

It is an arithmetic number, because the mean of its divisors is an integer number (42450084319).

Almost surely, 2^84900168637 is an apocalyptic number.

It is an amenable number.

84900168637 is a deficient number, since it is larger than the sum of its proper divisors (1).

84900168637 is an equidigital number, since it uses as much as digits as its factorization.

84900168637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 84900168637 in words is "eighty-four billion, nine hundred million, one hundred sixty-eight thousand, six hundred thirty-seven".