261545047588 has 12 divisors (see below), whose sum is σ = 499313272752. Its totient is φ = 118884112520.

The previous prime is 261545047571. The next prime is 261545047601. The reversal of 261545047588 is 885740545162.

261545047588 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 2972102770 + ... + 2972102857.

It is an arithmetic number, because the mean of its divisors is an integer number (41609439396).

Almost surely, 2^261545047588 is an apocalyptic number.

It is an amenable number.

261545047588 is a deficient number, since it is larger than the sum of its proper divisors (237768225164).

261545047588 is a wasteful number, since it uses less digits than its factorization.

261545047588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944205642 (or 5944205640 counting only the distinct ones).

The product of its (nonzero) digits is 10752000, while the sum is 55.

The spelling of 261545047588 in words is "two hundred sixty-one billion, five hundred forty-five million, forty-seven thousand, five hundred eighty-eight".