82355229661 has 4 divisors (see below), whose sum is σ = 82355915872. Its totient is φ = 82354543452.

The previous prime is 82355229659. The next prime is 82355229667. The reversal of 82355229661 is 16692255328.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 82355229661 - 2¹ = 82355229659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82355229667) 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, 110535 + ... + 420628.

It is an arithmetic number, because the mean of its divisors is an integer number (20588978968).

Almost surely, 2^82355229661 is an apocalyptic number.

It is an amenable number.

82355229661 is a deficient number, since it is larger than the sum of its proper divisors (686211).

82355229661 is a wasteful number, since it uses less digits than its factorization.

82355229661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 686210.

The product of its digits is 1555200, while the sum is 49.

The spelling of 82355229661 in words is "eighty-two billion, three hundred fifty-five million, two hundred twenty-nine thousand, six hundred sixty-one".