84958865149 has 2 divisors, whose sum is σ = 84958865150. Its totient is φ = 84958865148.

The previous prime is 84958865137. The next prime is 84958865177. The reversal of 84958865149 is 94156885948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67175309124 + 17783556025 = 259182^2 + 133355^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84958865149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84958865129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42479432574 + 42479432575.

It is an arithmetic number, because the mean of its divisors is an integer number (42479432575).

Almost surely, 2^84958865149 is an apocalyptic number.

It is an amenable number.

84958865149 is a deficient number, since it is larger than the sum of its proper divisors (1).

84958865149 is an equidigital number, since it uses as much as digits as its factorization.

84958865149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99532800, while the sum is 67.

The spelling of 84958865149 in words is "eighty-four billion, nine hundred fifty-eight million, eight hundred sixty-five thousand, one hundred forty-nine".