20520050312411 has 24 divisors (see below), whose sum is σ = 23772044761920. Its totient is φ = 17601710810112.

The previous prime is 20520050312407. The next prime is 20520050312431. The reversal of 20520050312411 is 11421305002502.

It is not a de Polignac number, because 20520050312411 - 2² = 20520050312407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20520050312401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34271666 + ... + 34865271.

It is an arithmetic number, because the mean of its divisors is an integer number (990501865080).

Almost surely, 2^{20520050312411} is an apocalyptic number.

20520050312411 is a deficient number, since it is larger than the sum of its proper divisors (3251994449509).

20520050312411 is a wasteful number, since it uses less digits than its factorization.

20520050312411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69137063 (or 69137046 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 20520050312411 its reverse (11421305002502), we get a palindrome (31941355314913).

The spelling of 20520050312411 in words is "twenty trillion, five hundred twenty billion, fifty million, three hundred twelve thousand, four hundred eleven".