261413072012 has 12 divisors (see below), whose sum is σ = 463263672480. Its totient is φ = 129052022736.

The previous prime is 261413071879. The next prime is 261413072023. The reversal of 261413072012 is 210270314162.

It is a super-3 number, since 3×261413072012³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 413627963 + ... + 413628594.

It is an arithmetic number, because the mean of its divisors is an integer number (38605306040).

Almost surely, 2^261413072012 is an apocalyptic number.

It is an amenable number.

261413072012 is a deficient number, since it is larger than the sum of its proper divisors (201850600468).

261413072012 is a wasteful number, since it uses less digits than its factorization.

261413072012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 827256640 (or 827256638 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 261413072012 its reverse (210270314162), we get a palindrome (471683386174).

The spelling of 261413072012 in words is "two hundred sixty-one billion, four hundred thirteen million, seventy-two thousand, twelve".