20320460461506 has 64 divisors (see below), whose sum is σ = 45106256232576. Its totient is φ = 6074916556800.

The previous prime is 20320460461493. The next prime is 20320460461661. The reversal of 20320460461506 is 60516406402302.

It is a super-2 number, since 2×20320460461506² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 56320515 + ... + 56680166.

It is an arithmetic number, because the mean of its divisors is an integer number (704785253634).

Almost surely, 2^{20320460461506} is an apocalyptic number.

20320460461506 is an abundant number, since it is smaller than the sum of its proper divisors (24785795771070).

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

20320460461506 is a wasteful number, since it uses less digits than its factorization.

20320460461506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113000787.

The product of its (nonzero) digits is 207360, while the sum is 39.

Adding to 20320460461506 its reverse (60516406402302), we get a palindrome (80836866863808).

The spelling of 20320460461506 in words is "twenty trillion, three hundred twenty billion, four hundred sixty million, four hundred sixty-one thousand, five hundred six".