20415035389 has 4 divisors (see below), whose sum is σ = 23331469024. Its totient is φ = 17498601756.

The previous prime is 20415035321. The next prime is 20415035401. The reversal of 20415035389 is 98353051402.

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 20415035389 - 2⁷ = 20415035261 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20415035689) 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, 1458216807 + ... + 1458216820.

It is an arithmetic number, because the mean of its divisors is an integer number (5832867256).

Almost surely, 2^20415035389 is an apocalyptic number.

It is an amenable number.

20415035389 is a deficient number, since it is larger than the sum of its proper divisors (2916433635).

20415035389 is an equidigital number, since it uses as much as digits as its factorization.

20415035389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2916433634.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 20415035389 in words is "twenty billion, four hundred fifteen million, thirty-five thousand, three hundred eighty-nine".