20064351436 has 6 divisors (see below), whose sum is σ = 35112615020. Its totient is φ = 10032175716.

The previous prime is 20064351431. The next prime is 20064351493. The reversal of 20064351436 is 63415346002.

It is not an unprimeable number, because it can be changed into a prime (20064351431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2508043926 + ... + 2508043933.

Almost surely, 2^20064351436 is an apocalyptic number.

It is an amenable number.

20064351436 is a deficient number, since it is larger than the sum of its proper divisors (15048263584).

20064351436 is a wasteful number, since it uses less digits than its factorization.

20064351436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016087863 (or 5016087861 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 34.

Adding to 20064351436 its reverse (63415346002), we get a palindrome (83479697438).

The spelling of 20064351436 in words is "twenty billion, sixty-four million, three hundred fifty-one thousand, four hundred thirty-six".