20513401174405 has 16 divisors (see below), whose sum is σ = 24894393638400. Its totient is φ = 16225205040000.

The previous prime is 20513401174403. The next prime is 20513401174421. The reversal of 20513401174405 is 50447110431502.

It is not a de Polignac number, because 20513401174405 - 2¹ = 20513401174403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20513401174403) 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 15 ways as a sum of consecutive naturals, for example, 4851280 + ... + 8035030.

It is an arithmetic number, because the mean of its divisors is an integer number (1555899602400).

Almost surely, 2^{20513401174405} is an apocalyptic number.

It is an amenable number.

20513401174405 is a deficient number, since it is larger than the sum of its proper divisors (4380992463995).

20513401174405 is a wasteful number, since it uses less digits than its factorization.

20513401174405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198324.

The product of its (nonzero) digits is 67200, while the sum is 37.

The spelling of 20513401174405 in words is "twenty trillion, five hundred thirteen billion, four hundred one million, one hundred seventy-four thousand, four hundred five".