82323613581 has 16 divisors (see below), whose sum is σ = 124949675520. Its totient is φ = 47723833520.

The previous prime is 82323613579. The next prime is 82323613693. The reversal of 82323613581 is 18531632328.

It is a happy number.

It is not a de Polignac number, because 82323613581 - 2¹ = 82323613579 is a prime.

It is a super-2 number, since 2×82323613581² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82323613181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54230871 + ... + 54232388.

It is an arithmetic number, because the mean of its divisors is an integer number (7809354720).

Almost surely, 2^82323613581 is an apocalyptic number.

It is an amenable number.

82323613581 is a deficient number, since it is larger than the sum of its proper divisors (42626061939).

82323613581 is a wasteful number, since it uses less digits than its factorization.

82323613581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108463296.

The product of its digits is 207360, while the sum is 42.

The spelling of 82323613581 in words is "eighty-two billion, three hundred twenty-three million, six hundred thirteen thousand, five hundred eighty-one".