20941995439 has 8 divisors (see below), whose sum is σ = 21006760320. Its totient is φ = 20877319200.

The previous prime is 20941995433. The next prime is 20941995469. The reversal of 20941995439 is 93459914902.

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 20941995439 - 2¹⁷ = 20941864367 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 20941995439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20941995433) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 467649 + ... + 510469.

It is an arithmetic number, because the mean of its divisors is an integer number (2625845040).

Almost surely, 2^20941995439 is an apocalyptic number.

20941995439 is a deficient number, since it is larger than the sum of its proper divisors (64764881).

20941995439 is a wasteful number, since it uses less digits than its factorization.

20941995439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44321.

The product of its (nonzero) digits is 3149280, while the sum is 55.

The spelling of 20941995439 in words is "twenty billion, nine hundred forty-one million, nine hundred ninety-five thousand, four hundred thirty-nine".