84708631540 has 96 divisors (see below), whose sum is σ = 200029697280. Its totient is φ = 29897911296.

The previous prime is 84708631519. The next prime is 84708631547. The reversal of 84708631540 is 4513680748.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84708631547) 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 31 ways as a sum of consecutive naturals, for example, 11878696 + ... + 11885824.

It is an arithmetic number, because the mean of its divisors is an integer number (2083642680).

Almost surely, 2^84708631540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84708631540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100014848640).

84708631540 is an abundant number, since it is smaller than the sum of its proper divisors (115321065740).

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

84708631540 is a wasteful number, since it uses less digits than its factorization.

84708631540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9161 (or 9159 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 84708631540 in words is "eighty-four billion, seven hundred eight million, six hundred thirty-one thousand, five hundred forty".