261200963926 has 64 divisors (see below), whose sum is σ = 486834647040. Its totient is φ = 102569328000.

The previous prime is 261200963917. The next prime is 261200963951. The reversal of 261200963926 is 629369002162.

261200963926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15337296 + ... + 15354316.

It is an arithmetic number, because the mean of its divisors is an integer number (7606791360).

Almost surely, 2^261200963926 is an apocalyptic number.

261200963926 is a deficient number, since it is larger than the sum of its proper divisors (225633683114).

261200963926 is a wasteful number, since it uses less digits than its factorization.

261200963926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18941.

The product of its (nonzero) digits is 419904, while the sum is 46.

The spelling of 261200963926 in words is "two hundred sixty-one billion, two hundred million, nine hundred sixty-three thousand, nine hundred twenty-six".