261586126854200 has 48 divisors (see below), whose sum is σ = 610610803797960. Its totient is φ = 104217580400000.

The previous prime is 261586126854131. The next prime is 261586126854251. The reversal of 261586126854200 is 2458621685162.

It is a super-2 number, since 2×261586126854200² (a number of 30 digits) contains 22 as substring.

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, 2605389311 + ... + 2605489710.

Almost surely, 2^{261586126854200} is an apocalyptic number.

261586126854200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261586126854200 is an abundant number, since it is smaller than the sum of its proper divisors (349024676943760).

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

261586126854200 is a wasteful number, since it uses less digits than its factorization.

261586126854200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5210879288 (or 5210879279 counting only the distinct ones).

The product of its (nonzero) digits is 11059200, while the sum is 56.

The spelling of 261586126854200 in words is "two hundred sixty-one trillion, five hundred eighty-six billion, one hundred twenty-six million, eight hundred fifty-four thousand, two hundred".