261466584610 has 128 divisors (see below), whose sum is σ = 653987727360. Its totient is φ = 72665164800.

The previous prime is 261466584607. The next prime is 261466584641. The reversal of 261466584610 is 16485664162.

261466584610 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 276936 + ... + 774355.

It is an arithmetic number, because the mean of its divisors is an integer number (5109279120).

Almost surely, 2^261466584610 is an apocalyptic number.

261466584610 is an abundant number, since it is smaller than the sum of its proper divisors (392521142750).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

261466584610 is a wasteful number, since it uses less digits than its factorization.

261466584610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051352.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 261466584610 in words is "two hundred sixty-one billion, four hundred sixty-six million, five hundred eighty-four thousand, six hundred ten".