9943961760 has 480 divisors, whose sum is σ = 36988503552. Its totient is φ = 2512373760.

The previous prime is 9943961719. The next prime is 9943961777. The reversal of 9943961760 is 671693499.

9943961760 is a `hidden beast` number, since 99 + 439 + 61 + 7 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 9943961697 and 9943961706.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 21293047 + ... + 21293513.

Almost surely, 2^9943961760 is an apocalyptic number.

9943961760 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 9943961760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18494251776).

9943961760 is an abundant number, since it is smaller than the sum of its proper divisors (27044541792).

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

9943961760 is a wasteful number, since it uses less digits than its factorization.

9943961760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 578 (or 561 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 9943961760 is about 99719.4151607399. The cubic root of 9943961760 is about 2150.4027916697.

The spelling of 9943961760 in words is "nine billion, nine hundred forty-three million, nine hundred sixty-one thousand, seven hundred sixty".