20013773520463 has 4 divisors (see below), whose sum is σ = 21067130021560. Its totient is φ = 18960417019368.

The previous prime is 20013773520431. The next prime is 20013773520467. The reversal of 20013773520463 is 36402537731002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20013773520463 - 2⁵ = 20013773520431 is a prime.

It is a super-2 number, since 2×20013773520463² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20013773520467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 526678250520 + ... + 526678250557.

It is an arithmetic number, because the mean of its divisors is an integer number (5266782505390).

Almost surely, 2^{20013773520463} is an apocalyptic number.

20013773520463 is a deficient number, since it is larger than the sum of its proper divisors (1053356501097).

20013773520463 is a wasteful number, since it uses less digits than its factorization.

20013773520463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053356501096.

The product of its (nonzero) digits is 635040, while the sum is 43.

The spelling of 20013773520463 in words is "twenty trillion, thirteen billion, seven hundred seventy-three million, five hundred twenty thousand, four hundred sixty-three".