20312460065436 has 48 divisors (see below), whose sum is σ = 59090792920320. Its totient is φ = 5275963653120.

The previous prime is 20312460065419. The next prime is 20312460065437. The reversal of 20312460065436 is 63456006421302.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20312460065437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10991590021 + ... + 10991591868.

It is an arithmetic number, because the mean of its divisors is an integer number (1231058185840).

Almost surely, 2^{20312460065436} is an apocalyptic number.

It is an amenable number.

20312460065436 is an abundant number, since it is smaller than the sum of its proper divisors (38778332854884).

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

20312460065436 is a wasteful number, since it uses less digits than its factorization.

20312460065436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21983181914 (or 21983181912 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 42.

Adding to 20312460065436 its reverse (63456006421302), we get a palindrome (83768466486738).

The spelling of 20312460065436 in words is "twenty trillion, three hundred twelve billion, four hundred sixty million, sixty-five thousand, four hundred thirty-six".