77201442066 has 48 divisors (see below), whose sum is σ = 190176914016. Its totient is φ = 20760050304.

The previous prime is 77201442047. The next prime is 77201442113. The reversal of 77201442066 is 66024410277.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7718236 + ... + 7728231.

It is an arithmetic number, because the mean of its divisors is an integer number (3962019042).

Almost surely, 2^77201442066 is an apocalyptic number.

77201442066 is an abundant number, since it is smaller than the sum of its proper divisors (112975471950).

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

77201442066 is a wasteful number, since it uses less digits than its factorization.

77201442066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15446503 (or 15446496 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 39.

The spelling of 77201442066 in words is "seventy-seven billion, two hundred one million, four hundred forty-two thousand, sixty-six".