1536221225338 has 48 divisors (see below), whose sum is σ = 2513965040640. Its totient is φ = 703223272800.

The previous prime is 1536221225323. The next prime is 1536221225339. The reversal of 1536221225338 is 8335221226351.

It is a junction number, because it is equal to n+sod(n) for n = 1536221225294 and 1536221225303.

It is not an unprimeable number, because it can be changed into a prime (1536221225339) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16044928 + ... + 16140388.

It is an arithmetic number, because the mean of its divisors is an integer number (52374271680).

Almost surely, 2^{1536221225338} is an apocalyptic number.

1536221225338 is a deficient number, since it is larger than the sum of its proper divisors (977743815302).

1536221225338 is a wasteful number, since it uses less digits than its factorization.

1536221225338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96251 (or 96232 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The spelling of 1536221225338 in words is "one trillion, five hundred thirty-six billion, two hundred twenty-one million, two hundred twenty-five thousand, three hundred thirty-eight".