261225161160011 has 8 divisors (see below), whose sum is σ = 261295912536624. Its totient is φ = 261154414746720.

The previous prime is 261225161159983. The next prime is 261225161160079. The reversal of 261225161160011 is 110061161522162.

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 261225161160011 - 2⁶ = 261225161159947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261225161160911) 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, 105271721 + ... + 107724581.

It is an arithmetic number, because the mean of its divisors is an integer number (32661989067078).

Almost surely, 2^{261225161160011} is an apocalyptic number.

261225161160011 is a deficient number, since it is larger than the sum of its proper divisors (70751376613).

261225161160011 is a wasteful number, since it uses less digits than its factorization.

261225161160011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2481661.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 261225161160011 in words is "two hundred sixty-one trillion, two hundred twenty-five billion, one hundred sixty-one million, one hundred sixty thousand, eleven".