20320262436 has 12 divisors (see below), whose sum is σ = 47413945712. Its totient is φ = 6773420808.

The previous prime is 20320262429. The next prime is 20320262453. The reversal of 20320262436 is 63426202302.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 846677590 + ... + 846677613.

Almost surely, 2^20320262436 is an apocalyptic number.

It is an amenable number.

20320262436 is an abundant number, since it is smaller than the sum of its proper divisors (27093683276).

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

20320262436 is a wasteful number, since it uses less digits than its factorization.

20320262436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1693355210 (or 1693355208 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 20320262436 its reverse (63426202302), we get a palindrome (83746464738).

The spelling of 20320262436 in words is "twenty billion, three hundred twenty million, two hundred sixty-two thousand, four hundred thirty-six".