20040173602 has 8 divisors (see below), whose sum is σ = 30793437612. Its totient is φ = 9775694400.

The previous prime is 20040173467. The next prime is 20040173609. The reversal of 20040173602 is 20637104002.

It can be written as a sum of positive squares in 2 ways, for example, as 19274046561 + 766127041 = 138831^2 + 27679^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (20040173609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122196099 + ... + 122196262.

Almost surely, 2^20040173602 is an apocalyptic number.

20040173602 is a deficient number, since it is larger than the sum of its proper divisors (10753264010).

20040173602 is a wasteful number, since it uses less digits than its factorization.

20040173602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244392404.

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 20040173602 its reverse (20637104002), we get a palindrome (40677277604).

The spelling of 20040173602 in words is "twenty billion, forty million, one hundred seventy-three thousand, six hundred two".