261161414404 has 12 divisors (see below), whose sum is σ = 498580882128. Its totient is φ = 118709733800.

The previous prime is 261161414387. The next prime is 261161414447. The reversal of 261161414404 is 404414161162.

It is a self number, because there is not a number n which added to its sum of digits gives 261161414404.

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, 2967743302 + ... + 2967743389.

It is an arithmetic number, because the mean of its divisors is an integer number (41548406844).

Almost surely, 2^261161414404 is an apocalyptic number.

It is an amenable number.

261161414404 is a deficient number, since it is larger than the sum of its proper divisors (237419467724).

261161414404 is a wasteful number, since it uses less digits than its factorization.

261161414404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5935486706 (or 5935486704 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

Adding to 261161414404 its reverse (404414161162), we get a palindrome (665575575566).

The spelling of 261161414404 in words is "two hundred sixty-one billion, one hundred sixty-one million, four hundred fourteen thousand, four hundred four".