9355661040 has 80 divisors (see below), whose sum is σ = 31639153536. Its totient is φ = 2268038400.

The previous prime is 9355661023. The next prime is 9355661053. The reversal of 9355661040 is 401665539.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 9355661040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1769266 + ... + 1774545.

Almost surely, 2^9355661040 is an apocalyptic number.

It is an amenable number.

9355661040 is an abundant number, since it is smaller than the sum of its proper divisors (22283492496).

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

9355661040 is a wasteful number, since it uses less digits than its factorization.

9355661040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3543838 (or 3543832 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 9355661040 is about 96724.6661405456. Note that the first 3 decimals coincide. The cubic root of 9355661040 is about 2107.1307886687.

The spelling of 9355661040 in words is "nine billion, three hundred fifty-five million, six hundred sixty-one thousand, forty".