261101118 has 16 divisors (see below), whose sum is σ = 522986256. Its totient is φ = 86903040.

The previous prime is 261101063. The next prime is 261101131. The reversal of 261101118 is 811101162.

It is a happy number.

261101118 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 261101094 and 261101103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28293 + ... + 36368.

It is an arithmetic number, because the mean of its divisors is an integer number (32686641).

Almost surely, 2^261101118 is an apocalyptic number.

261101118 is an abundant number, since it is smaller than the sum of its proper divisors (261885138).

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

261101118 is a wasteful number, since it uses less digits than its factorization.

261101118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65339.

The product of its (nonzero) digits is 96, while the sum is 21.

The square root of 261101118 is about 16158.6236418824. The cubic root of 261101118 is about 639.1501725071.

The spelling of 261101118 in words is "two hundred sixty-one million, one hundred one thousand, one hundred eighteen".