9661055400 has 144 divisors (see below), whose sum is σ = 34152799200. Its totient is φ = 2440679040.

The previous prime is 9661055363. The next prime is 9661055407. The reversal of 9661055400 is 45501669.

9661055400 is a `hidden beast` number, since 9 + 6 + 6 + 105 + 540 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (9661055407) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 107044 + ... + 175443.

Almost surely, 2^9661055400 is an apocalyptic number.

9661055400 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9661055400 is an abundant number, since it is smaller than the sum of its proper divisors (24491743800).

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

9661055400 is a wasteful number, since it uses less digits than its factorization.

9661055400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282528 (or 282516 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 9661055400 is about 98290.6679191875. The cubic root of 9661055400 is about 2129.8132481906.

The spelling of 9661055400 in words is "nine billion, six hundred sixty-one million, fifty-five thousand, four hundred".