82109254519 has 4 divisors (see below), whose sum is σ = 82112907240. Its totient is φ = 82105601800.

The previous prime is 82109254453. The next prime is 82109254531. The reversal of 82109254519 is 91545290128.

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 82109254519 - 2¹¹ = 82109252471 is a prime.

It is a super-2 number, since 2×82109254519² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82109251519) 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, 1792432 + ... + 1837669.

It is an arithmetic number, because the mean of its divisors is an integer number (20528226810).

Almost surely, 2^82109254519 is an apocalyptic number.

82109254519 is a deficient number, since it is larger than the sum of its proper divisors (3652721).

82109254519 is a wasteful number, since it uses less digits than its factorization.

82109254519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652720.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 82109254519 in words is "eighty-two billion, one hundred nine million, two hundred fifty-four thousand, five hundred nineteen".