20216488487 has 16 divisors (see below), whose sum is σ = 22192446528. Its totient is φ = 18300971520.

The previous prime is 20216488469. The next prime is 20216488517. The reversal of 20216488487 is 78488461202.

It is not a de Polignac number, because 20216488487 - 2¹⁴ = 20216472103 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 (20216488987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1917743 + ... + 1928255.

It is an arithmetic number, because the mean of its divisors is an integer number (1387027908).

Almost surely, 2^20216488487 is an apocalyptic number.

20216488487 is a deficient number, since it is larger than the sum of its proper divisors (1975958041).

20216488487 is a wasteful number, since it uses less digits than its factorization.

20216488487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13370.

The product of its (nonzero) digits is 1376256, while the sum is 50.

The spelling of 20216488487 in words is "twenty billion, two hundred sixteen million, four hundred eighty-eight thousand, four hundred eighty-seven".