84721246800 has 60 divisors (see below), whose sum is σ = 271390397760. Its totient is φ = 22592332160.

The previous prime is 84721246783. The next prime is 84721246843. The reversal of 84721246800 is 864212748.

It is a tau number, because it is divible by the number of its divisors (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35299320 + ... + 35301719.

It is an arithmetic number, because the mean of its divisors is an integer number (4523173296).

Almost surely, 2^84721246800 is an apocalyptic number.

84721246800 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84721246800 is an abundant number, since it is smaller than the sum of its proper divisors (186669150960).

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

84721246800 is a wasteful number, since it uses less digits than its factorization.

84721246800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70601060 (or 70601049 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 42.

The spelling of 84721246800 in words is "eighty-four billion, seven hundred twenty-one million, two hundred forty-six thousand, eight hundred".