261200226442 has 8 divisors (see below), whose sum is σ = 392657672196. Its totient is φ = 130314335712.

The previous prime is 261200226437. The next prime is 261200226493. The reversal of 261200226442 is 244622002162.

261200226442 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 259112558961 + 2087667481 = 509031^2 + 45691^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 142887613 + ... + 142889440.

Almost surely, 2^261200226442 is an apocalyptic number.

261200226442 is a deficient number, since it is larger than the sum of its proper divisors (131457445754).

261200226442 is a wasteful number, since it uses less digits than its factorization.

261200226442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285777512.

The product of its (nonzero) digits is 18432, while the sum is 31.

The spelling of 261200226442 in words is "two hundred sixty-one billion, two hundred million, two hundred twenty-six thousand, four hundred forty-two".