221525041536393 has 16 divisors (see below), whose sum is σ = 337566018278400. Its totient is φ = 126584219187216.

The previous prime is 221525041536289. The next prime is 221525041536499. The reversal of 221525041536393 is 393635140525122.

It is a de Polignac number, because none of the positive numbers 2^k-221525041536393 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (221525001536393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61491655 + ... + 64994412.

It is an arithmetic number, because the mean of its divisors is an integer number (21097876142400).

Almost surely, 2^{221525041536393} is an apocalyptic number.

It is an amenable number.

221525041536393 is a deficient number, since it is larger than the sum of its proper divisors (116040976742007).

221525041536393 is a wasteful number, since it uses less digits than its factorization.

221525041536393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126569476.

The product of its (nonzero) digits is 5832000, while the sum is 51.

The spelling of 221525041536393 in words is "two hundred twenty-one trillion, five hundred twenty-five billion, forty-one million, five hundred thirty-six thousand, three hundred ninety-three".