20640151154224 has 60 divisors (see below), whose sum is σ = 46739791354008. Its totient is φ = 8803855872000.

The previous prime is 20640151154201. The next prime is 20640151154237. The reversal of 20640151154224 is 42245115104602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62220177 + ... + 62551024.

Almost surely, 2^{20640151154224} is an apocalyptic number.

It is an amenable number.

20640151154224 is an abundant number, since it is smaller than the sum of its proper divisors (26099640199784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20640151154224 is a wasteful number, since it uses less digits than its factorization.

20640151154224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124771434 (or 124771421 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 37.

Adding to 20640151154224 its reverse (42245115104602), we get a palindrome (62885266258826).

The spelling of 20640151154224 in words is "twenty trillion, six hundred forty billion, one hundred fifty-one million, one hundred fifty-four thousand, two hundred twenty-four".