823044330461 has 4 divisors (see below), whose sum is σ = 858828866592. Its totient is φ = 787259794332.

The previous prime is 823044330439. The next prime is 823044330539. The reversal of 823044330461 is 164033440328.

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.

It is a cyclic number.

It is not a de Polignac number, because 823044330461 - 2³⁸ = 548166423517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (823044330161) 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, 17892268031 + ... + 17892268076.

It is an arithmetic number, because the mean of its divisors is an integer number (214707216648).

Almost surely, 2^823044330461 is an apocalyptic number.

It is an amenable number.

823044330461 is a deficient number, since it is larger than the sum of its proper divisors (35784536131).

823044330461 is a wasteful number, since it uses less digits than its factorization.

823044330461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35784536130.

The product of its (nonzero) digits is 165888, while the sum is 38.

Adding to 823044330461 its reverse (164033440328), we get a palindrome (987077770789).

The spelling of 823044330461 in words is "eight hundred twenty-three billion, forty-four million, three hundred thirty thousand, four hundred sixty-one".