261096801679 has 8 divisors (see below), whose sum is σ = 298403205120. Its totient is φ = 223792113336.

The previous prime is 261096801631. The next prime is 261096801701. The reversal of 261096801679 is 976108690162.

261096801679 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 261096801679 - 2²³ = 261088413071 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 (261096801629) 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, 84079 + ... + 727504.

It is an arithmetic number, because the mean of its divisors is an integer number (37300400640).

Almost surely, 2^261096801679 is an apocalyptic number.

261096801679 is a deficient number, since it is larger than the sum of its proper divisors (37306403441).

261096801679 is an equidigital number, since it uses as much as digits as its factorization.

261096801679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 857549.

The product of its (nonzero) digits is 1959552, while the sum is 55.

The spelling of 261096801679 in words is "two hundred sixty-one billion, ninety-six million, eight hundred one thousand, six hundred seventy-nine".