84808012919 has 4 divisors (see below), whose sum is σ = 96923443344. Its totient is φ = 72692582496.

The previous prime is 84808012889. The next prime is 84808012973. The reversal of 84808012919 is 91921080848.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84808012919 - 2²⁰ = 84806964343 is a prime.

It is a super-2 number, since 2×84808012919² (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 (84808012979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6057715202 + ... + 6057715215.

It is an arithmetic number, because the mean of its divisors is an integer number (24230860836).

Almost surely, 2^84808012919 is an apocalyptic number.

84808012919 is a deficient number, since it is larger than the sum of its proper divisors (12115430425).

84808012919 is a wasteful number, since it uses less digits than its factorization.

84808012919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12115430424.

The product of its (nonzero) digits is 331776, while the sum is 50.

The spelling of 84808012919 in words is "eighty-four billion, eight hundred eight million, twelve thousand, nine hundred nineteen".