261304523404 has 12 divisors (see below), whose sum is σ = 457305100000. Its totient is φ = 130645923408.

The previous prime is 261304523351. The next prime is 261304523411. The reversal of 261304523404 is 404325403162.

It is a self number, because there is not a number n which added to its sum of digits gives 261304523404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1491204 + ... + 1657195.

Almost surely, 2^261304523404 is an apocalyptic number.

It is an amenable number.

261304523404 is a deficient number, since it is larger than the sum of its proper divisors (196000576596).

261304523404 is a wasteful number, since it uses less digits than its factorization.

261304523404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169152 (or 3169150 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 261304523404 its reverse (404325403162), we get a palindrome (665629926566).

The spelling of 261304523404 in words is "two hundred sixty-one billion, three hundred four million, five hundred twenty-three thousand, four hundred four".