20345032364405 has 32 divisors (see below), whose sum is σ = 28284809409024. Its totient is φ = 13759365252096.

The previous prime is 20345032364401. The next prime is 20345032364413. The reversal of 20345032364405 is 50446323054302.

It is a cyclic number.

It is not a de Polignac number, because 20345032364405 - 2² = 20345032364401 is a prime.

It is a super-2 number, since 2×20345032364405² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20345032364401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 104778089 + ... + 104972081.

It is an arithmetic number, because the mean of its divisors is an integer number (883900294032).

Almost surely, 2^{20345032364405} is an apocalyptic number.

It is an amenable number.

20345032364405 is a deficient number, since it is larger than the sum of its proper divisors (7939777044619).

20345032364405 is a wasteful number, since it uses less digits than its factorization.

20345032364405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235125.

The product of its (nonzero) digits is 1036800, while the sum is 41.

The spelling of 20345032364405 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, three hundred sixty-four thousand, four hundred five".