84319523540 has 48 divisors (see below), whose sum is σ = 213017750400. Its totient is φ = 27387994752.

The previous prime is 84319523513. The next prime is 84319523549. The reversal of 84319523540 is 4532591348.

It is a super-2 number, since 2×84319523540² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84319523491 and 84319523500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84319523549) 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 15 ways as a sum of consecutive naturals, for example, 15846875 + ... + 15852194.

It is an arithmetic number, because the mean of its divisors is an integer number (4437869800).

Almost surely, 2^84319523540 is an apocalyptic number.

It is an amenable number.

84319523540 is an abundant number, since it is smaller than the sum of its proper divisors (128698226860).

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

84319523540 is a wasteful number, since it uses less digits than its factorization.

84319523540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31699104 (or 31699102 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 84319523540 in words is "eighty-four billion, three hundred nineteen million, five hundred twenty-three thousand, five hundred forty".