8403661385760 has 192 divisors, whose sum is σ = 27405101993472. Its totient is φ = 2163250446336.

The previous prime is 8403661385663. The next prime is 8403661385767. The reversal of 8403661385760 is 675831663048.

It is a self number, because there is not a number n which added to its sum of digits gives 8403661385760.

It is not an unprimeable number, because it can be changed into a prime (8403661385767) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 904509 + ... + 4198268.

It is an arithmetic number, because the mean of its divisors is an integer number (142734906216).

Almost surely, 2^{8403661385760} is an apocalyptic number.

8403661385760 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 8403661385760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13702550996736).

8403661385760 is an abundant number, since it is smaller than the sum of its proper divisors (19001440607712).

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

8403661385760 is a wasteful number, since it uses less digits than its factorization.

8403661385760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5102915 (or 5102907 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 57.

The spelling of 8403661385760 in words is "eight trillion, four hundred three billion, six hundred sixty-one million, three hundred eighty-five thousand, seven hundred sixty".