8605961772240 has 320 divisors, whose sum is σ = 31246720081920. Its totient is φ = 1918277652480.

The previous prime is 8605961772223. The next prime is 8605961772283. The reversal of 8605961772240 is 422771695068.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 168523831 + ... + 168574889.

It is an arithmetic number, because the mean of its divisors is an integer number (97646000256).

Almost surely, 2^{8605961772240} is an apocalyptic number.

8605961772240 is a gapful number since it is divisible by the number (80) 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 8605961772240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15623360040960).

8605961772240 is an abundant number, since it is smaller than the sum of its proper divisors (22640758309680).

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

8605961772240 is a wasteful number, since it uses less digits than its factorization.

8605961772240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53570 (or 53564 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 8605961772240 in words is "eight trillion, six hundred five billion, nine hundred sixty-one million, seven hundred seventy-two thousand, two hundred forty".