82561604302 has 4 divisors (see below), whose sum is σ = 123842406456. Its totient is φ = 41280802150.

The previous prime is 82561604297. The next prime is 82561604309. The reversal of 82561604302 is 20340616528.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82561604309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20640401074 + ... + 20640401077.

It is an arithmetic number, because the mean of its divisors is an integer number (30960601614).

Almost surely, 2^82561604302 is an apocalyptic number.

82561604302 is a deficient number, since it is larger than the sum of its proper divisors (41280802154).

82561604302 is a wasteful number, since it uses less digits than its factorization.

82561604302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41280802153.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 82561604302 in words is "eighty-two billion, five hundred sixty-one million, six hundred four thousand, three hundred two".