823455757089 has 12 divisors (see below), whose sum is σ = 1359355535616. Its totient is φ = 470546146872.

The previous prime is 823455757067. The next prime is 823455757139. The reversal of 823455757089 is 980757554328.

823455757089 is a `hidden beast` number, since 8 + 2 + 3 + 4 + 5 + 57 + 570 + 8 + 9 = 666.

It is not a de Polignac number, because 823455757089 - 2¹² = 823455752993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 13070726303 = 823455757089 / (8 + 2 + 3 + 4 + 5 + 5 + 7 + 5 + 7 + 0 + 8 + 9).

It is not an unprimeable number, because it can be changed into a prime (823455757009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6535363089 + ... + 6535363214.

It is an arithmetic number, because the mean of its divisors is an integer number (113279627968).

Almost surely, 2^823455757089 is an apocalyptic number.

It is an amenable number.

823455757089 is a deficient number, since it is larger than the sum of its proper divisors (535899778527).

823455757089 is a wasteful number, since it uses less digits than its factorization.

823455757089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13070726316 (or 13070726313 counting only the distinct ones).

The product of its (nonzero) digits is 84672000, while the sum is 63.

The spelling of 823455757089 in words is "eight hundred twenty-three billion, four hundred fifty-five million, seven hundred fifty-seven thousand, eighty-nine".