83859997777919 has 32 divisors (see below), whose sum is σ = 93436162364160. Its totient is φ = 74620526400000.

The previous prime is 83859997777889. The next prime is 83859997777921. The reversal of 83859997777919 is 91977779995838.

It is a cyclic number.

It is not a de Polignac number, because 83859997777919 - 2²⁴ = 83859981000703 is a prime.

It is a super-2 number, since 2×83859997777919² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83859997779919) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 985490564 + ... + 985575654.

It is an arithmetic number, because the mean of its divisors is an integer number (2919880073880).

Almost surely, 2^{83859997777919} is an apocalyptic number.

83859997777919 is a deficient number, since it is larger than the sum of its proper divisors (9576164586241).

83859997777919 is a wasteful number, since it uses less digits than its factorization.

83859997777919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91703.

The product of its digits is 136105583040, while the sum is 98.

The spelling of 83859997777919 in words is "eighty-three trillion, eight hundred fifty-nine billion, nine hundred ninety-seven million, seven hundred seventy-seven thousand, nine hundred nineteen".