261198088727 has 8 divisors (see below), whose sum is σ = 261474434016. Its totient is φ = 260921862432.

The previous prime is 261198088693. The next prime is 261198088729. The reversal of 261198088727 is 727880891162.

261198088727 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261198088727 - 2⁶ = 261198088663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261198088729) by changing a digit.

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, 4763873 + ... + 4818389.

It is an arithmetic number, because the mean of its divisors is an integer number (32684304252).

Almost surely, 2^261198088727 is an apocalyptic number.

261198088727 is a deficient number, since it is larger than the sum of its proper divisors (276345289).

261198088727 is a wasteful number, since it uses less digits than its factorization.

261198088727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59497.

The product of its (nonzero) digits is 5419008, while the sum is 59.

The spelling of 261198088727 in words is "two hundred sixty-one billion, one hundred ninety-eight million, eighty-eight thousand, seven hundred twenty-seven".