261348016 has 10 divisors (see below), whose sum is σ = 506361812. Its totient is φ = 130674000.

The previous prime is 261347969. The next prime is 261348019. The reversal of 261348016 is 610843162.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (261348019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8167110 + ... + 8167141.

Almost surely, 2^261348016 is an apocalyptic number.

It is an amenable number.

261348016 is a deficient number, since it is larger than the sum of its proper divisors (245013796).

261348016 is a wasteful number, since it uses less digits than its factorization.

261348016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16334259 (or 16334253 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 261348016 is about 16166.2616581571. The cubic root of 261348016 is about 639.3515698130.

The spelling of 261348016 in words is "two hundred sixty-one million, three hundred forty-eight thousand, sixteen".