261563141522 has 8 divisors (see below), whose sum is σ = 392370349872. Its totient is φ = 130773024900.

The previous prime is 261563141519. The next prime is 261563141549. The reversal of 261563141522 is 225141365162.

261563141522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 4234604 + ... + 4295927.

It is an arithmetic number, because the mean of its divisors is an integer number (49046293734).

Almost surely, 2^261563141522 is an apocalyptic number.

261563141522 is a deficient number, since it is larger than the sum of its proper divisors (130807208350).

261563141522 is a wasteful number, since it uses less digits than its factorization.

261563141522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8545864.

The product of its digits is 86400, while the sum is 38.

The spelling of 261563141522 in words is "two hundred sixty-one billion, five hundred sixty-three million, one hundred forty-one thousand, five hundred twenty-two".