9777620160 has 1344 divisors, whose sum is σ = 46012022784. Its totient is φ = 1916006400.

The previous prime is 9777620117. The next prime is 9777620179. The reversal of 9777620160 is 610267779.

9777620160 is a `hidden beast` number, since 9 + 7 + 7 + 7 + 620 + 16 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 137712925 + ... + 137712995.

It is an arithmetic number, because the mean of its divisors is an integer number (34235136).

Almost surely, 2^9777620160 is an apocalyptic number.

9777620160 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9777620160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23006011392).

9777620160 is an abundant number, since it is smaller than the sum of its proper divisors (36234402624).

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

9777620160 is a wasteful number, since it uses less digits than its factorization.

9777620160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 45.

The square root of 9777620160 is about 98881.8494972662. The cubic root of 9777620160 is about 2138.3447298347.

The spelling of 9777620160 in words is "nine billion, seven hundred seventy-seven million, six hundred twenty thousand, one hundred sixty".