261452646200 has 48 divisors (see below), whose sum is σ = 607919360760. Its totient is φ = 104573840000.

The previous prime is 261452646179. The next prime is 261452646253. The reversal of 261452646200 is 2646254162.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3590150 + ... + 3662250.

Almost surely, 2^261452646200 is an apocalyptic number.

261452646200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261452646200 is an abundant number, since it is smaller than the sum of its proper divisors (346466714560).

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

261452646200 is a wasteful number, since it uses less digits than its factorization.

261452646200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90248 (or 90239 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 38.

The spelling of 261452646200 in words is "two hundred sixty-one billion, four hundred fifty-two million, six hundred forty-six thousand, two hundred".