9777955712 has 64 divisors (see below), whose sum is σ = 23434051200. Its totient is φ = 3969990144.

The previous prime is 9777955703. The next prime is 9777955763. The reversal of 9777955712 is 2175597779.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270158 + ... + 304205.

It is an arithmetic number, because the mean of its divisors is an integer number (366157050).

Almost surely, 2^9777955712 is an apocalyptic number.

It is an amenable number.

9777955712 is an abundant number, since it is smaller than the sum of its proper divisors (13656095488).

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

9777955712 is a wasteful number, since it uses less digits than its factorization.

9777955712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574403 (or 574391 counting only the distinct ones).

The product of its digits is 9724050, while the sum is 59.

The square root of 9777955712 is about 98883.5462147267. The cubic root of 9777955712 is about 2138.3691910578.

The spelling of 9777955712 in words is "nine billion, seven hundred seventy-seven million, nine hundred fifty-five thousand, seven hundred twelve".