82273019809 has 4 divisors (see below), whose sum is σ = 82576610560. Its totient is φ = 81969429060.

The previous prime is 82273019797. The next prime is 82273019821. The reversal of 82273019809 is 90891037228.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (82273019797) and next prime (82273019821).

It is a cyclic number.

It is not a de Polignac number, because 82273019809 - 2³⁵ = 47913281441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82273019869) 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, 151794969 + ... + 151795510.

It is an arithmetic number, because the mean of its divisors is an integer number (20644152640).

Almost surely, 2^82273019809 is an apocalyptic number.

It is an amenable number.

82273019809 is a deficient number, since it is larger than the sum of its proper divisors (303590751).

82273019809 is a wasteful number, since it uses less digits than its factorization.

82273019809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303590750.

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 82273019809 in words is "eighty-two billion, two hundred seventy-three million, nineteen thousand, eight hundred nine".