20364040235 has 16 divisors (see below), whose sum is σ = 30466720512. Its totient is φ = 12694466400.

The previous prime is 20364040217. The next prime is 20364040247. The reversal of 20364040235 is 53204046302.

It is a de Polignac number, because none of the positive numbers 2^k-20364040235 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20364040198 and 20364040207.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26446421 + ... + 26447190.

It is an arithmetic number, because the mean of its divisors is an integer number (1904170032).

Almost surely, 2^20364040235 is an apocalyptic number.

20364040235 is a deficient number, since it is larger than the sum of its proper divisors (10102680277).

20364040235 is a wasteful number, since it uses less digits than its factorization.

20364040235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52893634.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 20364040235 its reverse (53204046302), we get a palindrome (73568086537).

The spelling of 20364040235 in words is "twenty billion, three hundred sixty-four million, forty thousand, two hundred thirty-five".