261196183536 has 20 divisors (see below), whose sum is σ = 674756807592. Its totient is φ = 87065394496.

The previous prime is 261196183513. The next prime is 261196183553. The reversal of 261196183536 is 635381691162.

261196183536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2720793531 + ... + 2720793626.

Almost surely, 2^261196183536 is an apocalyptic number.

It is an amenable number.

261196183536 is an abundant number, since it is smaller than the sum of its proper divisors (413560624056).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261196183536 is a wasteful number, since it uses less digits than its factorization.

261196183536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5441587168 (or 5441587162 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 51.

The spelling of 261196183536 in words is "two hundred sixty-one billion, one hundred ninety-six million, one hundred eighty-three thousand, five hundred thirty-six".