82399270561 has 4 divisors (see below), whose sum is σ = 82427310000. Its totient is φ = 82371231124.

The previous prime is 82399270559. The next prime is 82399270619. The reversal of 82399270561 is 16507299328.

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 a cyclic number.

It is not a de Polignac number, because 82399270561 - 2¹ = 82399270559 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82399270499 and 82399270508.

It is not an unprimeable number, because it can be changed into a prime (82399270061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14015311 + ... + 14021188.

It is an arithmetic number, because the mean of its divisors is an integer number (20606827500).

Almost surely, 2^82399270561 is an apocalyptic number.

It is an amenable number.

82399270561 is a deficient number, since it is larger than the sum of its proper divisors (28039439).

82399270561 is a wasteful number, since it uses less digits than its factorization.

82399270561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28039438.

The product of its (nonzero) digits is 1632960, while the sum is 52.

The spelling of 82399270561 in words is "eighty-two billion, three hundred ninety-nine million, two hundred seventy thousand, five hundred sixty-one".