261116976 has 40 divisors (see below), whose sum is σ = 703883520. Its totient is φ = 83254336.

The previous prime is 261116969. The next prime is 261116983. The reversal of 261116976 is 679611162.

It is an interprime number because it is at equal distance from previous prime (261116969) and next prime (261116983).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 117156 + ... + 119363.

It is an arithmetic number, because the mean of its divisors is an integer number (17597088).

Almost surely, 2^261116976 is an apocalyptic number.

It is an amenable number.

261116976 is an abundant number, since it is smaller than the sum of its proper divisors (442766544).

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

261116976 is a wasteful number, since it uses less digits than its factorization.

261116976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236553 (or 236547 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 261116976 is about 16159.1143321656. The cubic root of 261116976 is about 639.1631118597.

The spelling of 261116976 in words is "two hundred sixty-one million, one hundred sixteen thousand, nine hundred seventy-six".