20617171602 has 16 divisors (see below), whose sum is σ = 41246010912. Its totient is φ = 6870445920.

The previous prime is 20617171591. The next prime is 20617171621.

20617171602 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463099 + ... + 505662.

It is an arithmetic number, because the mean of its divisors is an integer number (2577875682).

Almost surely, 2^20617171602 is an apocalyptic number.

20617171602 is an abundant number, since it is smaller than the sum of its proper divisors (20628839310).

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

20617171602 is a wasteful number, since it uses less digits than its factorization.

20617171602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972313.

The product of its (nonzero) digits is 7056, while the sum is 33.

The spelling of 20617171602 in words is "twenty billion, six hundred seventeen million, one hundred seventy-one thousand, six hundred two".