18672619722240 has 320 divisors, whose sum is σ = 65140001701632. Its totient is φ = 4525358284800.

The previous prime is 18672619722233. The next prime is 18672619722283. The reversal of 18672619722240 is 4222791627681.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 302492019 + ... + 302553741.

Almost surely, 2^{18672619722240} is an apocalyptic number.

18672619722240 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 18672619722240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32570000850816).

18672619722240 is an abundant number, since it is smaller than the sum of its proper divisors (46467381979392).

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

18672619722240 is a wasteful number, since it uses less digits than its factorization.

18672619722240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65341 (or 65325 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 57.

The spelling of 18672619722240 in words is "eighteen trillion, six hundred seventy-two billion, six hundred nineteen million, seven hundred twenty-two thousand, two hundred forty".