20301343989 has 4 divisors (see below), whose sum is σ = 27068458656. Its totient is φ = 13534229324.

The previous prime is 20301343987. The next prime is 20301344003. The reversal of 20301343989 is 98934310302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20301343989 - 2¹ = 20301343987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20301343989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20301343987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3383557329 + ... + 3383557334.

It is an arithmetic number, because the mean of its divisors is an integer number (6767114664).

Almost surely, 2^20301343989 is an apocalyptic number.

It is an amenable number.

20301343989 is a deficient number, since it is larger than the sum of its proper divisors (6767114667).

20301343989 is an equidigital number, since it uses as much as digits as its factorization.

20301343989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767114666.

The product of its (nonzero) digits is 139968, while the sum is 42.

The spelling of 20301343989 in words is "twenty billion, three hundred one million, three hundred forty-three thousand, nine hundred eighty-nine".