261564214411147 has 8 divisors (see below), whose sum is σ = 267131466717696. Its totient is φ = 255997047781992.

The previous prime is 261564214411111. The next prime is 261564214411207. The reversal of 261564214411147 is 741114412465162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-261564214411147 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261564214411147.

It is not an unprimeable number, because it can be changed into a prime (261564214411447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15229743 + ... + 27478600.

It is an arithmetic number, because the mean of its divisors is an integer number (33391433339712).

Almost surely, 2^{261564214411147} is an apocalyptic number.

261564214411147 is a deficient number, since it is larger than the sum of its proper divisors (5567252306549).

261564214411147 is a wasteful number, since it uses less digits than its factorization.

261564214411147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42838697.

The product of its digits is 1290240, while the sum is 49.

The spelling of 261564214411147 in words is "two hundred sixty-one trillion, five hundred sixty-four billion, two hundred fourteen million, four hundred eleven thousand, one hundred forty-seven".