20433344613 has 16 divisors (see below), whose sum is σ = 29918065152. Its totient is φ = 12301830000.

The previous prime is 20433344501. The next prime is 20433344651. The reversal of 20433344613 is 31644333402.

It is not a de Polignac number, because 20433344613 - 2⁹ = 20433344101 is a prime.

It is a super-2 number, since 2×20433344613² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433342613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2045323 + ... + 2055288.

It is an arithmetic number, because the mean of its divisors is an integer number (1869879072).

Almost surely, 2^20433344613 is an apocalyptic number.

It is an amenable number.

20433344613 is a deficient number, since it is larger than the sum of its proper divisors (9484720539).

20433344613 is a wasteful number, since it uses less digits than its factorization.

20433344613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4100776.

The product of its (nonzero) digits is 62208, while the sum is 33.

The spelling of 20433344613 in words is "twenty billion, four hundred thirty-three million, three hundred forty-four thousand, six hundred thirteen".