261038376588827 has 16 divisors (see below), whose sum is σ = 263467239383040. Its totient is φ = 258615429101568.

The previous prime is 261038376588793. The next prime is 261038376588839. The reversal of 261038376588827 is 728885673830162.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 261038376588827 - 2¹⁶ = 261038376523291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261038376584827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 844337408 + ... + 844646514.

It is an arithmetic number, because the mean of its divisors is an integer number (16466702461440).

Almost surely, 2^{261038376588827} is an apocalyptic number.

261038376588827 is a deficient number, since it is larger than the sum of its proper divisors (2428862794213).

261038376588827 is a wasteful number, since it uses less digits than its factorization.

261038376588827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318650.

The product of its (nonzero) digits is 1300561920, while the sum is 74.

The spelling of 261038376588827 in words is "two hundred sixty-one trillion, thirty-eight billion, three hundred seventy-six million, five hundred eighty-eight thousand, eight hundred twenty-seven".