20104404788487 has 8 divisors (see below), whose sum is σ = 26808905768320. Its totient is φ = 13401420167160.

The previous prime is 20104404788449. The next prime is 20104404788551. The reversal of 20104404788487 is 78488740440102.

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

It is not a de Polignac number, because 20104404788487 - 2¹⁰ = 20104404787463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104404788407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379058689 + ... + 379111722.

It is an arithmetic number, because the mean of its divisors is an integer number (3351113221040).

Almost surely, 2^{20104404788487} is an apocalyptic number.

20104404788487 is a deficient number, since it is larger than the sum of its proper divisors (6704500979833).

20104404788487 is an equidigital number, since it uses as much as digits as its factorization.

20104404788487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 758179253.

The product of its (nonzero) digits is 12845056, while the sum is 57.

The spelling of 20104404788487 in words is "twenty trillion, one hundred four billion, four hundred four million, seven hundred eighty-eight thousand, four hundred eighty-seven".