84779919120 has 160 divisors (see below), whose sum is σ = 295340596992. Its totient is φ = 19961542656.

The previous prime is 84779919067. The next prime is 84779919121. The reversal of 84779919120 is 2191997748.

It is not an unprimeable number, because it can be changed into a prime (84779919121) 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 31 ways as a sum of consecutive naturals, for example, 518959 + ... + 662478.

Almost surely, 2^84779919120 is an apocalyptic number.

84779919120 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

84779919120 is an abundant number, since it is smaller than the sum of its proper divisors (210560677872).

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

84779919120 is a wasteful number, since it uses less digits than its factorization.

84779919120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181489 (or 1181483 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 57.

The spelling of 84779919120 in words is "eighty-four billion, seven hundred seventy-nine million, nine hundred nineteen thousand, one hundred twenty".