20045015013213 has 48 divisors (see below), whose sum is σ = 31711005121536. Its totient is φ = 12146551810560.

The previous prime is 20045015013169. The next prime is 20045015013223. The reversal of 20045015013213 is 31231051054002.

20045015013213 is a `hidden beast` number, since 20 + 0 + 4 + 501 + 5 + 0 + 132 + 1 + 3 = 666.

It is not a de Polignac number, because 20045015013213 - 2²⁹ = 20044478142301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20045015013223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2029206 + ... + 6648887.

It is an arithmetic number, because the mean of its divisors is an integer number (660645940032).

Almost surely, 2^{20045015013213} is an apocalyptic number.

It is an amenable number.

20045015013213 is a deficient number, since it is larger than the sum of its proper divisors (11665990108323).

20045015013213 is a wasteful number, since it uses less digits than its factorization.

20045015013213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8678634 (or 8678631 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 20045015013213 its reverse (31231051054002), we get a palindrome (51276066067215).

The spelling of 20045015013213 in words is "twenty trillion, forty-five billion, fifteen million, thirteen thousand, two hundred thirteen".