261658141524145 has 8 divisors (see below), whose sum is σ = 314088914075904. Its totient is φ = 209260417054704.

The previous prime is 261658141524103. The next prime is 261658141524163. The reversal of 261658141524145 is 541425141856162.

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 261658141524145 - 2³⁹ = 261108385710257 is a prime.

It is a Duffinian 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, 8262003159 + ... + 8262034828.

It is an arithmetic number, because the mean of its divisors is an integer number (39261114259488).

Almost surely, 2^{261658141524145} is an apocalyptic number.

It is an amenable number.

261658141524145 is a deficient number, since it is larger than the sum of its proper divisors (52430772551759).

261658141524145 is a wasteful number, since it uses less digits than its factorization.

261658141524145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16524041159.

The product of its digits is 9216000, while the sum is 55.

The spelling of 261658141524145 in words is "two hundred sixty-one trillion, six hundred fifty-eight billion, one hundred forty-one million, five hundred twenty-four thousand, one hundred forty-five".