9669709808640 has 1232 divisors, whose sum is σ = 40502071173888. Its totient is φ = 2168206589952.

The previous prime is 9669709808579. The next prime is 9669709808699. The reversal of 9669709808640 is 468089079669.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 1384746589 + ... + 1384753571.

Almost surely, 2^{9669709808640} is an apocalyptic number.

9669709808640 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 9669709808640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20251035586944).

9669709808640 is an abundant number, since it is smaller than the sum of its proper divisors (30832361365248).

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

9669709808640 is an equidigital number, since it uses as much as digits as its factorization.

9669709808640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7086 (or 7053 counting only the distinct ones).

The product of its (nonzero) digits is 282175488, while the sum is 72.

The spelling of 9669709808640 in words is "nine trillion, six hundred sixty-nine billion, seven hundred nine million, eight hundred eight thousand, six hundred forty".