261010880700 has 72 divisors (see below), whose sum is σ = 758325266160. Its totient is φ = 69314073600.

The previous prime is 261010880693. The next prime is 261010880759. The reversal of 261010880700 is 7088010162.

It is a happy number.

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 23 ways as a sum of consecutive naturals, for example, 1732755 + ... + 1877354.

Almost surely, 2^261010880700 is an apocalyptic number.

261010880700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261010880700 is an abundant number, since it is smaller than the sum of its proper divisors (497314385460).

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

261010880700 is a wasteful number, since it uses less digits than its factorization.

261010880700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610367 (or 3610360 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

Adding to 261010880700 its reverse (7088010162), we get a palindrome (268098890862).

The spelling of 261010880700 in words is "two hundred sixty-one billion, ten million, eight hundred eighty thousand, seven hundred".