82409189697 has 8 divisors (see below), whose sum is σ = 122087688480. Its totient is φ = 54939459780.

The previous prime is 82409189641. The next prime is 82409189719. The reversal of 82409189697 is 79698190428.

It is not a de Polignac number, because 82409189697 - 2¹⁴ = 82409173313 is a prime.

It is a super-2 number, since 2×82409189697² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82409169697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1526096079 + ... + 1526096132.

It is an arithmetic number, because the mean of its divisors is an integer number (15260961060).

Almost surely, 2^82409189697 is an apocalyptic number.

It is an amenable number.

82409189697 is a deficient number, since it is larger than the sum of its proper divisors (39678498783).

82409189697 is a wasteful number, since it uses less digits than its factorization.

82409189697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3052192220 (or 3052192214 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 82409189697 in words is "eighty-two billion, four hundred nine million, one hundred eighty-nine thousand, six hundred ninety-seven".