822472733984257 has 4 divisors (see below), whose sum is σ = 822490954918960. Its totient is φ = 822454513049556.

The previous prime is 822472733984243. The next prime is 822472733984287. The reversal of 822472733984257 is 752489337274228.

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 822472733984257 - 2³¹ = 822470586500609 is a prime.

It is a super-2 number, since 2×822472733984257² (a number of 31 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 822472733984257.

It is not an unprimeable number, because it can be changed into a prime (822472733984207) 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, 9110399643 + ... + 9110489920.

It is an arithmetic number, because the mean of its divisors is an integer number (205622738729740).

Almost surely, 2^{822472733984257} is an apocalyptic number.

It is an amenable number.

822472733984257 is a deficient number, since it is larger than the sum of its proper divisors (18220934703).

822472733984257 is a wasteful number, since it uses less digits than its factorization.

822472733984257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18220934702.

The product of its digits is 2275983360, while the sum is 73.

The spelling of 822472733984257 in words is "eight hundred twenty-two trillion, four hundred seventy-two billion, seven hundred thirty-three million, nine hundred eighty-four thousand, two hundred fifty-seven".