20013653450437 has 8 divisors (see below), whose sum is σ = 20289686819616. Its totient is φ = 19739268042192.

The previous prime is 20013653450423. The next prime is 20013653450447. The reversal of 20013653450437 is 73405435631002.

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

It is a cyclic number.

It is not a de Polignac number, because 20013653450437 - 2¹⁵ = 20013653417669 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20013653450393 and 20013653450402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013653450447) 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 7 ways as a sum of consecutive naturals, for example, 411965778 + ... + 412014355.

It is an arithmetic number, because the mean of its divisors is an integer number (2536210852452).

Almost surely, 2^{20013653450437} is an apocalyptic number.

It is an amenable number.

20013653450437 is a deficient number, since it is larger than the sum of its proper divisors (276033369179).

20013653450437 is a wasteful number, since it uses less digits than its factorization.

20013653450437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823980467.

The product of its (nonzero) digits is 907200, while the sum is 43.

The spelling of 20013653450437 in words is "twenty trillion, thirteen billion, six hundred fifty-three million, four hundred fifty thousand, four hundred thirty-seven".