82247748661 has 6 divisors (see below), whose sum is σ = 89061171810. Its totient is φ = 75920998608.

The previous prime is 82247748659. The next prime is 82247748683. The reversal of 82247748661 is 16684774228.

It can be written as a sum of positive squares in 3 ways, for example, as 569538225 + 81678210436 = 23865^2 + 285794^2 .

It is not a de Polignac number, because 82247748661 - 2¹ = 82247748659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82247748641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 243336366 + ... + 243336703.

It is an arithmetic number, because the mean of its divisors is an integer number (14843528635).

Almost surely, 2^82247748661 is an apocalyptic number.

It is an amenable number.

82247748661 is a deficient number, since it is larger than the sum of its proper divisors (6813423149).

82247748661 is a wasteful number, since it uses less digits than its factorization.

82247748661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486673095 (or 486673082 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 55.

The spelling of 82247748661 in words is "eighty-two billion, two hundred forty-seven million, seven hundred forty-eight thousand, six hundred sixty-one".