77859889152 has 112 divisors (see below), whose sum is σ = 210462571200. Its totient is φ = 25597181952.

The previous prime is 77859889141. The next prime is 77859889181. The reversal of 77859889152 is 25198895877.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772349 + ... + 1815747.

It is an arithmetic number, because the mean of its divisors is an integer number (1879130100).

Almost surely, 2^77859889152 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 77859889152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105231285600).

77859889152 is an abundant number, since it is smaller than the sum of its proper divisors (132602682048).

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

77859889152 is an equidigital number, since it uses as much as digits as its factorization.

77859889152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43501 (or 43477 counting only the distinct ones).

The product of its digits is 101606400, while the sum is 69.

The spelling of 77859889152 in words is "seventy-seven billion, eight hundred fifty-nine million, eight hundred eighty-nine thousand, one hundred fifty-two".