20345032402144 has 48 divisors (see below), whose sum is σ = 40674317636736. Its totient is φ = 10015212873600.

The previous prime is 20345032402111. The next prime is 20345032402193. The reversal of 20345032402144 is 44120423054302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1334379 + ... + 6516949.

It is an arithmetic number, because the mean of its divisors is an integer number (847381617432).

Almost surely, 2^{20345032402144} is an apocalyptic number.

It is an amenable number.

20345032402144 is a deficient number, since it is larger than the sum of its proper divisors (20329285234592).

20345032402144 is a wasteful number, since it uses less digits than its factorization.

20345032402144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5184479 (or 5184471 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 34.

Adding to 20345032402144 its reverse (44120423054302), we get a palindrome (64465455456446).

The spelling of 20345032402144 in words is "twenty trillion, three hundred forty-five billion, thirty-two million, four hundred two thousand, one hundred forty-four".