20024017556137 has 24 divisors (see below), whose sum is σ = 23321354284800. Its totient is φ = 17142739600896.

The previous prime is 20024017556083. The next prime is 20024017556167. The reversal of 20024017556137 is 73165571042002.

It is a happy number.

It is not a de Polignac number, because 20024017556137 - 2²⁷ = 20023883338409 is a prime.

It is a super-2 number, since 2×20024017556137² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20024017556093 and 20024017556102.

It is not an unprimeable number, because it can be changed into a prime (20024017556167) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 218311428 + ... + 218403130.

It is an arithmetic number, because the mean of its divisors is an integer number (971723095200).

Almost surely, 2^{20024017556137} is an apocalyptic number.

It is an amenable number.

20024017556137 is a deficient number, since it is larger than the sum of its proper divisors (3297336728663).

20024017556137 is a wasteful number, since it uses less digits than its factorization.

20024017556137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97045 (or 97038 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 43.

Adding to 20024017556137 its reverse (73165571042002), we get a palindrome (93189588598139).

The spelling of 20024017556137 in words is "twenty trillion, twenty-four billion, seventeen million, five hundred fifty-six thousand, one hundred thirty-seven".