84820786512 has 80 divisors (see below), whose sum is σ = 273189038592. Its totient is φ = 22031372160.

The previous prime is 84820786507. The next prime is 84820786541. The reversal of 84820786512 is 21568702848.

It is a super-2 number, since 2×84820786512² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11470978 + ... + 11478369.

Almost surely, 2^84820786512 is an apocalyptic number.

It is an amenable number.

84820786512 is an abundant number, since it is smaller than the sum of its proper divisors (188368252080).

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

84820786512 is a wasteful number, since it uses less digits than its factorization.

84820786512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22949376 (or 22949370 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 51.

The spelling of 84820786512 in words is "eighty-four billion, eight hundred twenty million, seven hundred eighty-six thousand, five hundred twelve".