261163516114 has 4 divisors (see below), whose sum is σ = 391745274174. Its totient is φ = 130581758056.

The previous prime is 261163516093. The next prime is 261163516127. The reversal of 261163516114 is 411615361162.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 246755595025 + 14407921089 = 496745^2 + 120033^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65290879027 + ... + 65290879030.

Almost surely, 2^261163516114 is an apocalyptic number.

261163516114 is a deficient number, since it is larger than the sum of its proper divisors (130581758060).

261163516114 is a wasteful number, since it uses less digits than its factorization.

261163516114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130581758059.

The product of its digits is 25920, while the sum is 37.

Adding to 261163516114 its reverse (411615361162), we get a palindrome (672778877276).

The spelling of 261163516114 in words is "two hundred sixty-one billion, one hundred sixty-three million, five hundred sixteen thousand, one hundred fourteen".