261534452164135 has 8 divisors (see below), whose sum is σ = 313870775404320. Its totient is φ = 209207939859744.

The previous prime is 261534452164121. The next prime is 261534452164147. The reversal of 261534452164135 is 531461254435162.

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 261534452164135 - 2⁵ = 261534452164103 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2452675300 + ... + 2452781929.

It is an arithmetic number, because the mean of its divisors is an integer number (39233846925540).

Almost surely, 2^{261534452164135} is an apocalyptic number.

261534452164135 is a deficient number, since it is larger than the sum of its proper divisors (52336323240185).

261534452164135 is a wasteful number, since it uses less digits than its factorization.

261534452164135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4905467897.

The product of its digits is 10368000, while the sum is 52.

The spelling of 261534452164135 in words is "two hundred sixty-one trillion, five hundred thirty-four billion, four hundred fifty-two million, one hundred sixty-four thousand, one hundred thirty-five".