84977769173 has 12 divisors (see below), whose sum is σ = 98321388480. Its totient is φ = 73186593480.

The previous prime is 84977769137. The next prime is 84977769179. The reversal of 84977769173 is 37196777948.

It is not a de Polignac number, because 84977769173 - 2⁶ = 84977769109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84977769179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18479165 + ... + 18483762.

It is an arithmetic number, because the mean of its divisors is an integer number (8193449040).

Almost surely, 2^84977769173 is an apocalyptic number.

It is an amenable number.

84977769173 is a deficient number, since it is larger than the sum of its proper divisors (13343619307).

84977769173 is a wasteful number, since it uses less digits than its factorization.

84977769173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36962968 (or 36962957 counting only the distinct ones).

The product of its digits is 112021056, while the sum is 68.

The spelling of 84977769173 in words is "eighty-four billion, nine hundred seventy-seven million, seven hundred sixty-nine thousand, one hundred seventy-three".