17042120664 has 128 divisors (see below), whose sum is σ = 45678090240. Its totient is φ = 5285975552.

The previous prime is 17042120663. The next prime is 17042120759. The reversal of 17042120664 is 46602124071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17042120663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4486414 + ... + 4490210.

It is an arithmetic number, because the mean of its divisors is an integer number (356860080).

Almost surely, 2^17042120664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17042120664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22839045120).

17042120664 is an abundant number, since it is smaller than the sum of its proper divisors (28635969576).

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

17042120664 is a wasteful number, since it uses less digits than its factorization.

17042120664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4049 (or 4045 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The spelling of 17042120664 in words is "seventeen billion, forty-two million, one hundred twenty thousand, six hundred sixty-four".