1536413124221 has 4 divisors (see below), whose sum is σ = 1577937803292. Its totient is φ = 1494888445152.

The previous prime is 1536413124199. The next prime is 1536413124241. The reversal of 1536413124221 is 1224213146351.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1106714520025 + 429698604196 = 1052005^2 + 655514^2 .

It is a cyclic number.

It is not a de Polignac number, because 1536413124221 - 2¹⁴ = 1536413107837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1536413124241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20762339480 + ... + 20762339553.

It is an arithmetic number, because the mean of its divisors is an integer number (394484450823).

Almost surely, 2^{1536413124221} is an apocalyptic number.

It is an amenable number.

1536413124221 is a deficient number, since it is larger than the sum of its proper divisors (41524679071).

1536413124221 is an equidigital number, since it uses as much as digits as its factorization.

1536413124221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41524679070.

The product of its digits is 34560, while the sum is 35.

The spelling of 1536413124221 in words is "one trillion, five hundred thirty-six billion, four hundred thirteen million, one hundred twenty-four thousand, two hundred twenty-one".