9779771466 has 128 divisors (see below), whose sum is σ = 23275296000. Its totient is φ = 3035066112.

The previous prime is 9779771459. The next prime is 9779771473. The reversal of 9779771466 is 6641779779.

9779771466 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (9779771459) and next prime (9779771473).

It is a super-4 number, since 4×9779771466⁴ (a number of 41 digits) contains 4444 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17557660 + ... + 17558216.

It is an arithmetic number, because the mean of its divisors is an integer number (181838250).

Almost surely, 2^9779771466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9779771466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11637648000).

9779771466 is an abundant number, since it is smaller than the sum of its proper divisors (13495524534).

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

9779771466 is a wasteful number, since it uses less digits than its factorization.

9779771466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853 (or 847 counting only the distinct ones).

The product of its digits is 28005264, while the sum is 63.

The square root of 9779771466 is about 98892.7270632173. The cubic root of 9779771466 is about 2138.5015470161.

The spelling of 9779771466 in words is "nine billion, seven hundred seventy-nine million, seven hundred seventy-one thousand, four hundred sixty-six".