17040420720 has 120 divisors (see below), whose sum is σ = 57282690816. Its totient is φ = 4539723264.

The previous prime is 17040420701. The next prime is 17040420743. The reversal of 17040420720 is 2702404071.

It is a happy number.

17040420720 is a `hidden beast` number, since 170 + 4 + 0 + 420 + 72 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 771754 + ... + 793526.

Almost surely, 2^17040420720 is an apocalyptic number.

17040420720 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 17040420720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28641345408).

17040420720 is an abundant number, since it is smaller than the sum of its proper divisors (40242270096).

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

17040420720 is a wasteful number, since it uses less digits than its factorization.

17040420720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22879 (or 22870 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

Adding to 17040420720 its reverse (2702404071), we get a palindrome (19742824791).

The spelling of 17040420720 in words is "seventeen billion, forty million, four hundred twenty thousand, seven hundred twenty".