261414522644 has 12 divisors (see below), whose sum is σ = 499064088768. Its totient is φ = 118824783000.

The previous prime is 261414522623. The next prime is 261414522661. The reversal of 261414522644 is 446225414162.

261414522644 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 3 ways as a sum of consecutive naturals, for example, 2970619532 + ... + 2970619619.

It is an arithmetic number, because the mean of its divisors is an integer number (41588674064).

Almost surely, 2^261414522644 is an apocalyptic number.

It is an amenable number.

261414522644 is a deficient number, since it is larger than the sum of its proper divisors (237649566124).

261414522644 is a wasteful number, since it uses less digits than its factorization.

261414522644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5941239166 (or 5941239164 counting only the distinct ones).

The product of its digits is 368640, while the sum is 41.

The spelling of 261414522644 in words is "two hundred sixty-one billion, four hundred fourteen million, five hundred twenty-two thousand, six hundred forty-four".