20306444877189 has 32 divisors (see below), whose sum is σ = 30213534960000. Its totient is φ = 13479294447360.

The previous prime is 20306444877163. The next prime is 20306444877287. The reversal of 20306444877189 is 98177844460302.

20306444877189 is a `hidden beast` number, since 2 + 0 + 3 + 0 + 6 + 4 + 4 + 487 + 71 + 89 = 666.

It is not a de Polignac number, because 20306444877189 - 2⁵ = 20306444877157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20306444877989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4093399 + ... + 7574219.

It is an arithmetic number, because the mean of its divisors is an integer number (944172967500).

Almost surely, 2^{20306444877189} is an apocalyptic number.

It is an amenable number.

20306444877189 is a deficient number, since it is larger than the sum of its proper divisors (9907090082811).

20306444877189 is a wasteful number, since it uses less digits than its factorization.

20306444877189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3481762 (or 3481756 counting only the distinct ones).

The product of its (nonzero) digits is 65028096, while the sum is 63.

The spelling of 20306444877189 in words is "twenty trillion, three hundred six billion, four hundred forty-four million, eight hundred seventy-seven thousand, one hundred eighty-nine".