84036725820 has 72 divisors (see below), whose sum is σ = 261800919744. Its totient is φ = 21804121728.

The previous prime is 84036725797. The next prime is 84036725831. The reversal of 84036725820 is 2852763048.

84036725820 is a `hidden beast` number, since 8 + 4 + 0 + 3 + 67 + 2 + 582 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6302404 + ... + 6315723.

Almost surely, 2^84036725820 is an apocalyptic number.

It is an amenable number.

84036725820 is an abundant number, since it is smaller than the sum of its proper divisors (177764193924).

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

84036725820 is a wasteful number, since it uses less digits than its factorization.

84036725820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12618179 (or 12618174 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 84036725820 in words is "eighty-four billion, thirty-six million, seven hundred twenty-five thousand, eight hundred twenty".