20413502511121 has 8 divisors (see below), whose sum is σ = 20680170021504. Its totient is φ = 20147328374640.

The previous prime is 20413502511113. The next prime is 20413502511131. The reversal of 20413502511121 is 12111520531402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20413502511121 - 2³ = 20413502511113 is a prime.

It is a super-2 number, since 2×20413502511121² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20413502511121.

It is not an unprimeable number, because it can be changed into a prime (20413502511131) 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 7 ways as a sum of consecutive naturals, for example, 123260185 + ... + 123425686.

It is an arithmetic number, because the mean of its divisors is an integer number (2585021252688).

Almost surely, 2^{20413502511121} is an apocalyptic number.

It is an amenable number.

20413502511121 is a deficient number, since it is larger than the sum of its proper divisors (266667510383).

20413502511121 is an equidigital number, since it uses as much as digits as its factorization.

20413502511121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246686951.

The product of its (nonzero) digits is 2400, while the sum is 28.

The spelling of 20413502511121 in words is "twenty trillion, four hundred thirteen billion, five hundred two million, five hundred eleven thousand, one hundred twenty-one".