261113320604 has 6 divisors (see below), whose sum is σ = 456948311064. Its totient is φ = 130556660300.

The previous prime is 261113320583. The next prime is 261113320621. The reversal of 261113320604 is 406023311162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32639165072 + ... + 32639165079.

It is an arithmetic number, because the mean of its divisors is an integer number (76158051844).

Almost surely, 2^261113320604 is an apocalyptic number.

It is an amenable number.

261113320604 is a deficient number, since it is larger than the sum of its proper divisors (195834990460).

261113320604 is a wasteful number, since it uses less digits than its factorization.

261113320604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65278330155 (or 65278330153 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

Adding to 261113320604 its reverse (406023311162), we get a palindrome (667136631766).

The spelling of 261113320604 in words is "two hundred sixty-one billion, one hundred thirteen million, three hundred twenty thousand, six hundred four".