261050552131 has 8 divisors (see below), whose sum is σ = 261493428224. Its totient is φ = 260607791880.

The previous prime is 261050552129. The next prime is 261050552137. The reversal of 261050552131 is 131255050162.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261050552131 - 2¹ = 261050552129 is a prime.

It is a super-2 number, since 2×261050552131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 261050552093 and 261050552102.

It is not an unprimeable number, because it can be changed into a prime (261050552137) 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, 5304046 + ... + 5353036.

It is an arithmetic number, because the mean of its divisors is an integer number (32686678528).

Almost surely, 2^261050552131 is an apocalyptic number.

261050552131 is a deficient number, since it is larger than the sum of its proper divisors (442876093).

261050552131 is an equidigital number, since it uses as much as digits as its factorization.

261050552131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57921.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 261050552131 in words is "two hundred sixty-one billion, fifty million, five hundred fifty-two thousand, one hundred thirty-one".