3645423030405 has 16 divisors (see below), whose sum is σ = 6281344298880. Its totient is φ = 1794669799488.

The previous prime is 3645423030391. The next prime is 3645423030443. The reversal of 3645423030405 is 5040303245463.

It is not a de Polignac number, because 3645423030405 - 2²³ = 3645414641797 is a prime.

It is a super-3 number, since 3×3645423030405³ (a number of 39 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9347238345 + ... + 9347238734.

It is an arithmetic number, because the mean of its divisors is an integer number (392584018680).

Almost surely, 2^{3645423030405} is an apocalyptic number.

It is an amenable number.

3645423030405 is a deficient number, since it is larger than the sum of its proper divisors (2635921268475).

3645423030405 is a wasteful number, since it uses less digits than its factorization.

3645423030405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18694477100.

The product of its (nonzero) digits is 518400, while the sum is 39.

Adding to 3645423030405 its reverse (5040303245463), we get a palindrome (8685726275868).

The spelling of 3645423030405 in words is "three trillion, six hundred forty-five billion, four hundred twenty-three million, thirty thousand, four hundred five".