261161114251 has 8 divisors (see below), whose sum is σ = 261425759024. Its totient is φ = 260896550400.

The previous prime is 261161114209. The next prime is 261161114261. The reversal of 261161114251 is 152411161162.

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 261161114251 - 2¹⁵ = 261161081483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261161114261) 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, 7997980 + ... + 8030566.

It is an arithmetic number, because the mean of its divisors is an integer number (32678219878).

Almost surely, 2^261161114251 is an apocalyptic number.

261161114251 is a deficient number, since it is larger than the sum of its proper divisors (264644773).

261161114251 is a wasteful number, since it uses less digits than its factorization.

261161114251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40461.

The product of its digits is 2880, while the sum is 31.

The spelling of 261161114251 in words is "two hundred sixty-one billion, one hundred sixty-one million, one hundred fourteen thousand, two hundred fifty-one".