20345032400015 has 4 divisors (see below), whose sum is σ = 24414038880024. Its totient is φ = 16276025920008.

The previous prime is 20345032399949. The next prime is 20345032400041. The reversal of 20345032400015 is 51000423054302.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20345032400015 - 2³⁴ = 20327852530831 is a prime.

It is a super-2 number, since 2×20345032400015² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2034503239997 + ... + 2034503240006.

It is an arithmetic number, because the mean of its divisors is an integer number (6103509720006).

Almost surely, 2^{20345032400015} is an apocalyptic number.

20345032400015 is a deficient number, since it is larger than the sum of its proper divisors (4069006480009).

20345032400015 is an equidigital number, since it uses as much as digits as its factorization.

20345032400015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4069006480008.

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20345032400015 its reverse (51000423054302), we get a palindrome (71345455454317).

The spelling of 20345032400015 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, four hundred thousand, fifteen".