17420805272240 has 20 divisors (see below), whose sum is σ = 40503372258144. Its totient is φ = 6968322108864.

The previous prime is 17420805272237. The next prime is 17420805272251. The reversal of 17420805272240 is 4227250802471.

It is a happy number.

17420805272240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 17420805272191 and 17420805272200.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108880032872 + ... + 108880033031.

Almost surely, 2^{17420805272240} is an apocalyptic number.

17420805272240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

17420805272240 is an abundant number, since it is smaller than the sum of its proper divisors (23082566985904).

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

17420805272240 is a wasteful number, since it uses less digits than its factorization.

17420805272240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217760065916 (or 217760065910 counting only the distinct ones).

The product of its (nonzero) digits is 501760, while the sum is 44.

The spelling of 17420805272240 in words is "seventeen trillion, four hundred twenty billion, eight hundred five million, two hundred seventy-two thousand, two hundred forty".