20941289413 has 16 divisors (see below), whose sum is σ = 24200619840. Its totient is φ = 17920656000.

The previous prime is 20941289381. The next prime is 20941289423. The reversal of 20941289413 is 31498214902.

It is a cyclic number.

It is not a de Polignac number, because 20941289413 - 2⁵ = 20941289381 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20941289413.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20941289423) 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 15 ways as a sum of consecutive naturals, for example, 286288 + ... + 351913.

It is an arithmetic number, because the mean of its divisors is an integer number (1512538740).

Almost surely, 2^20941289413 is an apocalyptic number.

It is an amenable number.

20941289413 is a deficient number, since it is larger than the sum of its proper divisors (3259330427).

20941289413 is a wasteful number, since it uses less digits than its factorization.

20941289413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638388.

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 20941289413 in words is "twenty billion, nine hundred forty-one million, two hundred eighty-nine thousand, four hundred thirteen".