19487972528213 has 16 divisors (see below), whose sum is σ = 24395259732480. Its totient is φ = 15179272717056.

The previous prime is 19487972528173. The next prime is 19487972528287. The reversal of 19487972528213 is 31282527978491.

It is not a de Polignac number, because 19487972528213 - 2²⁰ = 19487971479637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19487972524213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2823521981 + ... + 2823528882.

It is an arithmetic number, because the mean of its divisors is an integer number (1524703733280).

Almost surely, 2^{19487972528213} is an apocalyptic number.

It is an amenable number.

19487972528213 is a deficient number, since it is larger than the sum of its proper divisors (4907287204267).

19487972528213 is a wasteful number, since it uses less digits than its factorization.

19487972528213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5647050916.

The product of its digits is 121927680, while the sum is 68.

The spelling of 19487972528213 in words is "nineteen trillion, four hundred eighty-seven billion, nine hundred seventy-two million, five hundred twenty-eight thousand, two hundred thirteen".