20215413123466 has 128 divisors (see below), whose sum is σ = 35195655306240. Its totient is φ = 8694327882240.

The previous prime is 20215413123461. The next prime is 20215413123473. The reversal of 20215413123466 is 66432131451202.

It is a super-3 number, since 3×20215413123466³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20215413123461) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 4226510911 + ... + 4226515693.

It is an arithmetic number, because the mean of its divisors is an integer number (274966057080).

Almost surely, 2^{20215413123466} is an apocalyptic number.

20215413123466 is a deficient number, since it is larger than the sum of its proper divisors (14980242182774).

20215413123466 is a wasteful number, since it uses less digits than its factorization.

20215413123466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5933 (or 5911 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 40.

Adding to 20215413123466 its reverse (66432131451202), we get a palindrome (86647544574668).

The spelling of 20215413123466 in words is "twenty trillion, two hundred fifteen billion, four hundred thirteen million, one hundred twenty-three thousand, four hundred sixty-six".