261832551770133 has 6 divisors (see below), whose sum is σ = 378202574779094. Its totient is φ = 174555034513416.

The previous prime is 261832551770129. The next prime is 261832551770137. The reversal of 261832551770133 is 331077155238162.

261832551770133 is a `hidden beast` number, since 2 + 6 + 1 + 8 + 3 + 2 + 551 + 7 + 70 + 13 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (261832551770129) and next prime (261832551770137).

It can be written as a sum of positive squares in only one way, i.e., 154067847533649 + 107764704236484 = 12412407^2 + 10380978^2 .

It is not a de Polignac number, because 261832551770133 - 2² = 261832551770129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 261832551770133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261832551770137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14546252876110 + ... + 14546252876127.

Almost surely, 2^{261832551770133} is an apocalyptic number.

It is an amenable number.

261832551770133 is a deficient number, since it is larger than the sum of its proper divisors (116370023008961).

261832551770133 is a wasteful number, since it uses less digits than its factorization.

261832551770133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29092505752243 (or 29092505752240 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 54.

The spelling of 261832551770133 in words is "two hundred sixty-one trillion, eight hundred thirty-two billion, five hundred fifty-one million, seven hundred seventy thousand, one hundred thirty-three".