20641131603 has 12 divisors (see below), whose sum is σ = 30149968680. Its totient is φ = 13606138656.

The previous prime is 20641131601. The next prime is 20641131617. The reversal of 20641131603 is 30613114602.

20641131603 is a `hidden beast` number, since 2 + 0 + 6 + 41 + 13 + 1 + 603 = 666.

It is not a de Polignac number, because 20641131603 - 2¹ = 20641131601 is a prime.

It is a super-3 number, since 3×20641131603³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20641131601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12883801 + ... + 12885402.

It is an arithmetic number, because the mean of its divisors is an integer number (2512497390).

Almost surely, 2^20641131603 is an apocalyptic number.

20641131603 is a deficient number, since it is larger than the sum of its proper divisors (9508837077).

20641131603 is a wasteful number, since it uses less digits than its factorization.

20641131603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25769298 (or 25769295 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The spelling of 20641131603 in words is "twenty billion, six hundred forty-one million, one hundred thirty-one thousand, six hundred three".