20003769645 has 16 divisors (see below), whose sum is σ = 33397598592. Its totient is φ = 10204821440.

The previous prime is 20003769587. The next prime is 20003769647. The reversal of 20003769645 is 54696730002.

It is not a de Polignac number, because 20003769645 - 2⁶ = 20003769581 is a prime.

It is a super-3 number, since 3×20003769645³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20003769597 and 20003769606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003769647) 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, 28990626 + ... + 28991315.

It is an arithmetic number, because the mean of its divisors is an integer number (2087349912).

Almost surely, 2^20003769645 is an apocalyptic number.

It is an amenable number.

20003769645 is a deficient number, since it is larger than the sum of its proper divisors (13393828947).

20003769645 is a wasteful number, since it uses less digits than its factorization.

20003769645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57981972.

The product of its (nonzero) digits is 272160, while the sum is 42.

The spelling of 20003769645 in words is "twenty billion, three million, seven hundred sixty-nine thousand, six hundred forty-five".