261231141132162 has 12 divisors (see below), whose sum is σ = 566000805786390. Its totient is φ = 87077047044048.

The previous prime is 261231141132107. The next prime is 261231141132179.

261231141132162 is a `hidden beast` number, since 2 + 6 + 1 + 2 + 311 + 4 + 11 + 321 + 6 + 2 = 666.

261231141132162 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in only one way, i.e., 258538132132641 + 2693008999521 = 16079121^2 + 1641039^2 .

It is a super-2 number, since 2×261231141132162² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7256420586987 + ... + 7256420587022.

Almost surely, 2^{261231141132162} is an apocalyptic number.

261231141132162 is an abundant number, since it is smaller than the sum of its proper divisors (304769664654228).

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

261231141132162 is a wasteful number, since it uses less digits than its factorization.

261231141132162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14512841174017 (or 14512841174014 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The spelling of 261231141132162 in words is "two hundred sixty-one trillion, two hundred thirty-one billion, one hundred forty-one million, one hundred thirty-two thousand, one hundred sixty-two".