20113381065 has 8 divisors (see below), whose sum is σ = 32181409728. Its totient is φ = 10727136560.

The previous prime is 20113381009. The next prime is 20113381109. The reversal of 20113381065 is 56018331102.

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

It is not a de Polignac number, because 20113381065 - 2⁸ = 20113380809 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670446021 + ... + 670446050.

It is an arithmetic number, because the mean of its divisors is an integer number (4022676216).

Almost surely, 2^20113381065 is an apocalyptic number.

It is an amenable number.

20113381065 is a deficient number, since it is larger than the sum of its proper divisors (12068028663).

20113381065 is a wasteful number, since it uses less digits than its factorization.

20113381065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1340892079.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 20113381065 in words is "twenty billion, one hundred thirteen million, three hundred eighty-one thousand, sixty-five".