21733145603144 has 16 divisors (see below), whose sum is σ = 40751743718400. Its totient is φ = 10866013944912.

The previous prime is 21733145603131. The next prime is 21733145603161. The reversal of 21733145603144 is 44130654133712.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21733145603095 and 21733145603104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69691784 + ... + 70002935.

It is an arithmetic number, because the mean of its divisors is an integer number (2546983982400).

Almost surely, 2^{21733145603144} is an apocalyptic number.

It is an amenable number.

21733145603144 is a deficient number, since it is larger than the sum of its proper divisors (19018598115256).

21733145603144 is a wasteful number, since it uses less digits than its factorization.

21733145603144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139714172 (or 139714168 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 44.

Adding to 21733145603144 its reverse (44130654133712), we get a palindrome (65863799736856).

The spelling of 21733145603144 in words is "twenty-one trillion, seven hundred thirty-three billion, one hundred forty-five million, six hundred three thousand, one hundred forty-four".