20320463260264 has 32 divisors (see below), whose sum is σ = 38204501368320. Its totient is φ = 10132633060416.

The previous prime is 20320463260249. The next prime is 20320463260277. The reversal of 20320463260264 is 46206236402302.

It is a super-2 number, since 2×20320463260264² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2113897 + ... + 6716359.

It is an arithmetic number, because the mean of its divisors is an integer number (1193890667760).

Almost surely, 2^{20320463260264} is an apocalyptic number.

It is an amenable number.

20320463260264 is a deficient number, since it is larger than the sum of its proper divisors (17884038108056).

20320463260264 is a wasteful number, since it uses less digits than its factorization.

20320463260264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4603969 (or 4603965 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 40.

Adding to 20320463260264 its reverse (46206236402302), we get a palindrome (66526699662566).

The spelling of 20320463260264 in words is "twenty trillion, three hundred twenty billion, four hundred sixty-three million, two hundred sixty thousand, two hundred sixty-four".