261424136034066 has 8 divisors (see below), whose sum is σ = 522848272068144. Its totient is φ = 87141378678020.

The previous prime is 261424136033941. The next prime is 261424136034071. The reversal of 261424136034066 is 660430631424162.

261424136034066 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.

261424136034066 is an admirable number.

It is a super-2 number, since 2×261424136034066² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21785344669500 + ... + 21785344669511.

It is an arithmetic number, because the mean of its divisors is an integer number (65356034008518).

Almost surely, 2^{261424136034066} is an apocalyptic number.

261424136034066 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

261424136034066 is a wasteful number, since it uses less digits than its factorization.

261424136034066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43570689339016.

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 261424136034066 in words is "two hundred sixty-one trillion, four hundred twenty-four billion, one hundred thirty-six million, thirty-four thousand, sixty-six".