17042120650 has 12 divisors (see below), whose sum is σ = 31698344502. Its totient is φ = 6816848240.

The previous prime is 17042120621. The next prime is 17042120653. The reversal of 17042120650 is 5602124071.

It can be written as a sum of positive squares in 3 ways, for example, as 11933159121 + 5108961529 = 109239^2 + 71477^2 .

It is not an unprimeable number, because it can be changed into a prime (17042120653) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170421157 + ... + 170421256.

Almost surely, 2^17042120650 is an apocalyptic number.

17042120650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

17042120650 is a deficient number, since it is larger than the sum of its proper divisors (14656223852).

17042120650 is a wasteful number, since it uses less digits than its factorization.

17042120650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340842425 (or 340842420 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The spelling of 17042120650 in words is "seventeen billion, forty-two million, one hundred twenty thousand, six hundred fifty".