84536939520 has 1232 divisors, whose sum is σ = 347955937920. Its totient is φ = 19508428800.

The previous prime is 84536939503. The next prime is 84536939551. The reversal of 84536939520 is 2593963548.

84536939520 is a `hidden beast` number, since 8 + 4 + 53 + 69 + 3 + 9 + 520 = 666.

It is a super-3 number, since 3×84536939520³ (a number of 34 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1190661085 + ... + 1190661155.

Almost surely, 2^84536939520 is an apocalyptic number.

84536939520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84536939520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (173977968960).

84536939520 is an abundant number, since it is smaller than the sum of its proper divisors (263418998400).

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

84536939520 is a wasteful number, since it uses less digits than its factorization.

84536939520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 6998400, while the sum is 54.

The spelling of 84536939520 in words is "eighty-four billion, five hundred thirty-six million, nine hundred thirty-nine thousand, five hundred twenty".