261147014536 has 32 divisors (see below), whose sum is σ = 492050990880. Its totient is φ = 129933619200.

The previous prime is 261147014519. The next prime is 261147014567. The reversal of 261147014536 is 635410741162.

261147014536 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 7 ways as a sum of consecutive naturals, for example, 18539016 + ... + 18553096.

It is an arithmetic number, because the mean of its divisors is an integer number (15376593465).

Almost surely, 2^261147014536 is an apocalyptic number.

It is an amenable number.

261147014536 is a deficient number, since it is larger than the sum of its proper divisors (230903976344).

261147014536 is a wasteful number, since it uses less digits than its factorization.

261147014536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25285 (or 25281 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 40.

Adding to 261147014536 its reverse (635410741162), we get a palindrome (896557755698).

The spelling of 261147014536 in words is "two hundred sixty-one billion, one hundred forty-seven million, fourteen thousand, five hundred thirty-six".