261272167176 has 32 divisors (see below), whose sum is σ = 655913404800. Its totient is φ = 86726324160.

The previous prime is 261272167171. The next prime is 261272167183. The reversal of 261272167176 is 671761272162.

It is not an unprimeable number, because it can be changed into a prime (261272167171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22769035 + ... + 22780506.

It is an arithmetic number, because the mean of its divisors is an integer number (20497293900).

Almost surely, 2^261272167176 is an apocalyptic number.

It is an amenable number.

261272167176 is an abundant number, since it is smaller than the sum of its proper divisors (394641237624).

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

261272167176 is a wasteful number, since it uses less digits than its factorization.

261272167176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45549789 (or 45549785 counting only the distinct ones).

The product of its digits is 592704, while the sum is 48.

The spelling of 261272167176 in words is "two hundred sixty-one billion, two hundred seventy-two million, one hundred sixty-seven thousand, one hundred seventy-six".