261313441522 has 24 divisors (see below), whose sum is σ = 455991032304. Its totient is φ = 111985152552.

The previous prime is 261313441481. The next prime is 261313441553. The reversal of 261313441522 is 225144313162.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1944673 + ... + 2074699.

It is an arithmetic number, because the mean of its divisors is an integer number (18999626346).

Almost surely, 2^261313441522 is an apocalyptic number.

261313441522 is a deficient number, since it is larger than the sum of its proper divisors (194677590782).

261313441522 is a wasteful number, since it uses less digits than its factorization.

261313441522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150550 (or 150543 counting only the distinct ones).

The product of its digits is 34560, while the sum is 34.

Adding to 261313441522 its reverse (225144313162), we get a palindrome (486457754684).

The spelling of 261313441522 in words is "two hundred sixty-one billion, three hundred thirteen million, four hundred forty-one thousand, five hundred twenty-two".