261130125113 has 64 divisors (see below), whose sum is σ = 328298987520. Its totient is φ = 204388012800.

The previous prime is 261130125107. The next prime is 261130125121. The reversal of 261130125113 is 311521031162.

It is a cyclic number.

It is not a de Polignac number, because 261130125113 - 2²² = 261125930809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (261130125133) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17542808 + ... + 17557686.

It is an arithmetic number, because the mean of its divisors is an integer number (5129671680).

Almost surely, 2^261130125113 is an apocalyptic number.

It is an amenable number.

261130125113 is a deficient number, since it is larger than the sum of its proper divisors (67168862407).

261130125113 is a wasteful number, since it uses less digits than its factorization.

261130125113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15078.

The product of its (nonzero) digits is 1080, while the sum is 26.

Adding to 261130125113 its reverse (311521031162), we get a palindrome (572651156275).

The spelling of 261130125113 in words is "two hundred sixty-one billion, one hundred thirty million, one hundred twenty-five thousand, one hundred thirteen".