261900482728 has 16 divisors (see below), whose sum is σ = 491091072480. Its totient is φ = 130942863408.

The previous prime is 261900482719. The next prime is 261900482777. The reversal of 261900482728 is 827284009162.

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, 769900 + ... + 1056667.

It is an arithmetic number, because the mean of its divisors is an integer number (30693192030).

Almost surely, 2^261900482728 is an apocalyptic number.

It is an amenable number.

261900482728 is a deficient number, since it is larger than the sum of its proper divisors (229190589752).

261900482728 is a wasteful number, since it uses less digits than its factorization.

261900482728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1844496 (or 1844492 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 49.

The spelling of 261900482728 in words is "two hundred sixty-one billion, nine hundred million, four hundred eighty-two thousand, seven hundred twenty-eight".