261832562325016 has 8 divisors (see below), whose sum is σ = 490936054359420. Its totient is φ = 130916281162504.

The previous prime is 261832562324951. The next prime is 261832562325043. The reversal of 261832562325016 is 610523265238162.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16364535145306 + ... + 16364535145321.

Almost surely, 2^{261832562325016} is an apocalyptic number.

It is an amenable number.

261832562325016 is a deficient number, since it is larger than the sum of its proper divisors (229103492034404).

261832562325016 is a wasteful number, since it uses less digits than its factorization.

261832562325016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32729070290633 (or 32729070290629 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 52.

The spelling of 261832562325016 in words is "two hundred sixty-one trillion, eight hundred thirty-two billion, five hundred sixty-two million, three hundred twenty-five thousand, sixteen".