20520050454113 has 16 divisors (see below), whose sum is σ = 24221563355136. Its totient is φ = 17011693282320.

The previous prime is 20520050454061. The next prime is 20520050454119. The reversal of 20520050454113 is 31145405002502.

It is a cyclic number.

It is not a de Polignac number, because 20520050454113 - 2²⁸ = 20519782018657 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20520050454113.

It is not an unprimeable number, because it can be changed into a prime (20520050454119) 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, 26130881 + ... + 26904702.

It is an arithmetic number, because the mean of its divisors is an integer number (1513847709696).

Almost surely, 2^{20520050454113} is an apocalyptic number.

It is an amenable number.

20520050454113 is a deficient number, since it is larger than the sum of its proper divisors (3701512901023).

20520050454113 is a wasteful number, since it uses less digits than its factorization.

20520050454113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53037404.

The product of its (nonzero) digits is 24000, while the sum is 32.

Adding to 20520050454113 its reverse (31145405002502), we get a palindrome (51665455456615).

The spelling of 20520050454113 in words is "twenty trillion, five hundred twenty billion, fifty million, four hundred fifty-four thousand, one hundred thirteen".