261119099 has 4 divisors (see below), whose sum is σ = 276479064. Its totient is φ = 245759136.

The previous prime is 261119083. The next prime is 261119113. The reversal of 261119099 is 990911162.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 261119099 - 2⁴ = 261119083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261119039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7679957 + ... + 7679990.

It is an arithmetic number, because the mean of its divisors is an integer number (69119766).

Almost surely, 2^261119099 is an apocalyptic number.

261119099 is a deficient number, since it is larger than the sum of its proper divisors (15359965).

261119099 is a wasteful number, since it uses less digits than its factorization.

261119099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15359964.

The product of its (nonzero) digits is 8748, while the sum is 38.

The square root of 261119099 is about 16159.1800225135. The cubic root of 261119099 is about 639.1648440841.

The spelling of 261119099 in words is "two hundred sixty-one million, one hundred nineteen thousand, ninety-nine".