20288496385 has 8 divisors (see below), whose sum is σ = 24371274816. Its totient is φ = 16214077680.

The previous prime is 20288496383. The next prime is 20288496391. The reversal of 20288496385 is 58369488202.

It is a happy number.

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

It is not a de Polignac number, because 20288496385 - 2¹ = 20288496383 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20288496383) 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, 2084589 + ... + 2094298.

It is an arithmetic number, because the mean of its divisors is an integer number (3046409352).

Almost surely, 2^20288496385 is an apocalyptic number.

It is an amenable number.

20288496385 is a deficient number, since it is larger than the sum of its proper divisors (4082778431).

20288496385 is an equidigital number, since it uses as much as digits as its factorization.

20288496385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4179863.

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 20288496385 in words is "twenty billion, two hundred eighty-eight million, four hundred ninety-six thousand, three hundred eighty-five".