9418361840640 has 352 divisors, whose sum is σ = 33715540258560. Its totient is φ = 2493225566208.

The previous prime is 9418361840627. The next prime is 9418361840651. The reversal of 9418361840640 is 460481638149.

9418361840640 is a `hidden beast` number, since 9 + 4 + 18 + 3 + 618 + 4 + 0 + 6 + 4 + 0 = 666.

It is a super-2 number, since 2×9418361840640² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18690229 + ... + 19187531.

Almost surely, 2^{9418361840640} is an apocalyptic number.

9418361840640 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 9418361840640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16857770129280).

9418361840640 is an abundant number, since it is smaller than the sum of its proper divisors (24297178417920).

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

9418361840640 is a wasteful number, since it uses less digits than its factorization.

9418361840640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497474 (or 497450 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 54.

The spelling of 9418361840640 in words is "nine trillion, four hundred eighteen billion, three hundred sixty-one million, eight hundred forty thousand, six hundred forty".