20409074863 has 8 divisors (see below), whose sum is σ = 21419530848. Its totient is φ = 19408877664.

The previous prime is 20409074849. The next prime is 20409074869. The reversal of 20409074863 is 36847090402.

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

It is a cyclic number.

It is not a de Polignac number, because 20409074863 - 2⁵ = 20409074831 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 (20409074869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2560620 + ... + 2568577.

It is an arithmetic number, because the mean of its divisors is an integer number (2677441356).

Almost surely, 2^20409074863 is an apocalyptic number.

20409074863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20409074863 is a deficient number, since it is larger than the sum of its proper divisors (1010455985).

20409074863 is a wasteful number, since it uses less digits than its factorization.

20409074863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5129393.

The product of its (nonzero) digits is 290304, while the sum is 43.

The spelling of 20409074863 in words is "twenty billion, four hundred nine million, seventy-four thousand, eight hundred sixty-three".