22166780766 has 32 divisors (see below), whose sum is σ = 47756193408. Its totient is φ = 6818782560.

The previous prime is 22166780729. The next prime is 22166780767. The reversal of 22166780766 is 66708766122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22166780767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 284365 + ... + 353831.

It is an arithmetic number, because the mean of its divisors is an integer number (1492381044).

Almost surely, 2^22166780766 is an apocalyptic number.

22166780766 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

22166780766 is an abundant number, since it is smaller than the sum of its proper divisors (25589412642).

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

22166780766 is a wasteful number, since it uses less digits than its factorization.

22166780766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73576.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 22166780766 in words is "twenty-two billion, one hundred sixty-six million, seven hundred eighty thousand, seven hundred sixty-six".