77222820189 has 16 divisors (see below), whose sum is σ = 104040288000. Its totient is φ = 50946186816.

The previous prime is 77222820149. The next prime is 77222820209. The reversal of 77222820189 is 98102822277.

It is a de Polignac number, because none of the positive numbers 2^k-77222820189 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77222820149) 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 15 ways as a sum of consecutive naturals, for example, 200869 + ... + 441354.

It is an arithmetic number, because the mean of its divisors is an integer number (6502518000).

Almost surely, 2^77222820189 is an apocalyptic number.

It is an amenable number.

77222820189 is a deficient number, since it is larger than the sum of its proper divisors (26817467811).

77222820189 is a wasteful number, since it uses less digits than its factorization.

77222820189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642644.

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 77222820189 in words is "seventy-seven billion, two hundred twenty-two million, eight hundred twenty thousand, one hundred eighty-nine".