17155428842 has 4 divisors (see below), whose sum is σ = 25733143266. Its totient is φ = 8577714420.

The previous prime is 17155428793. The next prime is 17155428847. The reversal of 17155428842 is 24882455171.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 15010905361 + 2144523481 = 122519^2 + 46309^2 .

It is not an unprimeable number, because it can be changed into a prime (17155428847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4288857209 + ... + 4288857212.

Almost surely, 2^17155428842 is an apocalyptic number.

17155428842 is a deficient number, since it is larger than the sum of its proper divisors (8577714424).

17155428842 is an equidigital number, since it uses as much as digits as its factorization.

17155428842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8577714423.

The product of its digits is 716800, while the sum is 47.

The spelling of 17155428842 in words is "seventeen billion, one hundred fifty-five million, four hundred twenty-eight thousand, eight hundred forty-two".