261632246225522 has 16 divisors (see below), whose sum is σ = 401780906241792. Its totient is φ = 127708396124400.

The previous prime is 261632246225459. The next prime is 261632246225527. The reversal of 261632246225522 is 225522642236162.

It is not an unprimeable number, because it can be changed into a prime (261632246225527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779492753 + ... + 779828324.

It is an arithmetic number, because the mean of its divisors is an integer number (25111306640112).

Almost surely, 2^{261632246225522} is an apocalyptic number.

261632246225522 is a deficient number, since it is larger than the sum of its proper divisors (140148660016270).

261632246225522 is a wasteful number, since it uses less digits than its factorization.

261632246225522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559323073.

The product of its digits is 8294400, while the sum is 50.

The spelling of 261632246225522 in words is "two hundred sixty-one trillion, six hundred thirty-two billion, two hundred forty-six million, two hundred twenty-five thousand, five hundred twenty-two".