84779919119 has 6 divisors (see below), whose sum is σ = 98621538624. Its totient is φ = 72668502060.

The previous prime is 84779919067. The next prime is 84779919121. The reversal of 84779919119 is 91191997748.

It is not a de Polignac number, because 84779919119 - 2¹² = 84779915023 is a prime.

It is a super-2 number, since 2×84779919119² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84779910119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 865101167 + ... + 865101264.

It is an arithmetic number, because the mean of its divisors is an integer number (16436923104).

Almost surely, 2^84779919119 is an apocalyptic number.

84779919119 is a deficient number, since it is larger than the sum of its proper divisors (13841619505).

84779919119 is a wasteful number, since it uses less digits than its factorization.

84779919119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730202445 (or 1730202438 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 65.

The spelling of 84779919119 in words is "eighty-four billion, seven hundred seventy-nine million, nine hundred nineteen thousand, one hundred nineteen".