18199485104640 has 960 divisors, whose sum is σ = 68595142201344. Its totient is φ = 4104053194752.

The previous prime is 18199485104639. The next prime is 18199485104681. The reversal of 18199485104640 is 4640158499181.

It is a tau number, because it is divible by the number of its divisors (960).

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9415149114 + ... + 9415151046.

Almost surely, 2^{18199485104640} is an apocalyptic number.

18199485104640 is a gapful number since it is divisible by the number (10) 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 18199485104640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34297571100672).

18199485104640 is an abundant number, since it is smaller than the sum of its proper divisors (50395657096704).

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

18199485104640 is a wasteful number, since it uses less digits than its factorization.

18199485104640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297 (or 2274 counting only the distinct ones).

The product of its (nonzero) digits is 9953280, while the sum is 60.

The spelling of 18199485104640 in words is "eighteen trillion, one hundred ninety-nine billion, four hundred eighty-five million, one hundred four thousand, six hundred forty".