922785578161 has 4 divisors (see below), whose sum is σ = 945292543524. Its totient is φ = 900278612800.

The previous prime is 922785578147. The next prime is 922785578201. The reversal of 922785578161 is 161875587229.

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

It can be written as a sum of positive squares in 2 ways, for example, as 265875328161 + 656910250000 = 515631^2 + 810500^2 .

It is a cyclic number.

It is not a de Polignac number, because 922785578161 - 2¹³ = 922785569969 is a prime.

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 922785578161.

It is not an unprimeable number, because it can be changed into a prime (922785578101) 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 3 ways as a sum of consecutive naturals, for example, 11253482620 + ... + 11253482701.

It is an arithmetic number, because the mean of its divisors is an integer number (236323135881).

Almost surely, 2^922785578161 is an apocalyptic number.

It is an amenable number.

922785578161 is a deficient number, since it is larger than the sum of its proper divisors (22506965363).

922785578161 is a wasteful number, since it uses less digits than its factorization.

922785578161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22506965362.

The product of its digits is 16934400, while the sum is 61.

The spelling of 922785578161 in words is "nine hundred twenty-two billion, seven hundred eighty-five million, five hundred seventy-eight thousand, one hundred sixty-one".