84521248840 has 32 divisors (see below), whose sum is σ = 217340354880. Its totient is φ = 28978713792.

The previous prime is 84521248831. The next prime is 84521248841. The reversal of 84521248840 is 4884212548.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (84521248841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 150930522 + ... + 150931081.

It is an arithmetic number, because the mean of its divisors is an integer number (6791886090).

Almost surely, 2^84521248840 is an apocalyptic number.

It is an amenable number.

84521248840 is an abundant number, since it is smaller than the sum of its proper divisors (132819106040).

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

84521248840 is a wasteful number, since it uses less digits than its factorization.

84521248840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301861621 (or 301861617 counting only the distinct ones).

The product of its (nonzero) digits is 655360, while the sum is 46.

The spelling of 84521248840 in words is "eighty-four billion, five hundred twenty-one million, two hundred forty-eight thousand, eight hundred forty".