261533660101067 has 16 divisors (see below), whose sum is σ = 264317239831680. Its totient is φ = 258751878458112.

The previous prime is 261533660101027. The next prime is 261533660101183. The reversal of 261533660101067 is 760101066335162.

It is a cyclic number.

It is not a de Polignac number, because 261533660101067 - 2¹² = 261533660096971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261533660101027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3903279188 + ... + 3903346190.

It is an arithmetic number, because the mean of its divisors is an integer number (16519827489480).

Almost surely, 2^{261533660101067} is an apocalyptic number.

261533660101067 is a deficient number, since it is larger than the sum of its proper divisors (2783579730613).

261533660101067 is an equidigital number, since it uses as much as digits as its factorization.

261533660101067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79802.

The product of its (nonzero) digits is 816480, while the sum is 47.

The spelling of 261533660101067 in words is "two hundred sixty-one trillion, five hundred thirty-three billion, six hundred sixty million, one hundred one thousand, sixty-seven".