22172776650066 has 16 divisors (see below), whose sum is σ = 50680632343104. Its totient is φ = 6335079042864.

The previous prime is 22172776649981. The next prime is 22172776650067. The reversal of 22172776650066 is 66005667727122.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22172776649988 and 22172776650015.

It is not an unprimeable number, because it can be changed into a prime (22172776650067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263961626745 + ... + 263961626828.

It is an arithmetic number, because the mean of its divisors is an integer number (3167539521444).

Almost surely, 2^{22172776650066} is an apocalyptic number.

22172776650066 is an abundant number, since it is smaller than the sum of its proper divisors (28507855693038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22172776650066 is a wasteful number, since it uses less digits than its factorization.

22172776650066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527923253585.

The product of its (nonzero) digits is 17781120, while the sum is 57.

The spelling of 22172776650066 in words is "twenty-two trillion, one hundred seventy-two billion, seven hundred seventy-six million, six hundred fifty thousand, sixty-six".