84085764880 has 80 divisors (see below), whose sum is σ = 216228129264. Its totient is φ = 30207928320.

The previous prime is 84085764877. The next prime is 84085764881. The reversal of 84085764880 is 8846758048.

It can be written as a sum of positive squares in 8 ways, for example, as 122589184 + 83963175696 = 11072^2 + 289764^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (84085764881) 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 15 ways as a sum of consecutive naturals, for example, 1054111 + ... + 1131070.

Almost surely, 2^84085764880 is an apocalyptic number.

84085764880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84085764880 is an abundant number, since it is smaller than the sum of its proper divisors (132142364384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84085764880 is a wasteful number, since it uses less digits than its factorization.

84085764880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2185244 (or 2185238 counting only the distinct ones).

The product of its (nonzero) digits is 13762560, while the sum is 58.

The spelling of 84085764880 in words is "eighty-four billion, eighty-five million, seven hundred sixty-four thousand, eight hundred eighty".