261010108668 has 48 divisors (see below), whose sum is σ = 644890698144. Its totient is φ = 81880166400.

The previous prime is 261010108631. The next prime is 261010108669. The reversal of 261010108668 is 866801010162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261010108669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4072068 + ... + 4135668.

It is an arithmetic number, because the mean of its divisors is an integer number (13435222878).

Almost surely, 2^261010108668 is an apocalyptic number.

It is an amenable number.

261010108668 is an abundant number, since it is smaller than the sum of its proper divisors (383880589476).

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

261010108668 is a wasteful number, since it uses less digits than its factorization.

261010108668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83742 (or 83740 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The spelling of 261010108668 in words is "two hundred sixty-one billion, ten million, one hundred eight thousand, six hundred sixty-eight".