261264404462162 has 4 divisors (see below), whose sum is σ = 391896606693246. Its totient is φ = 130632202231080.

The previous prime is 261264404462161. The next prime is 261264404462183.

It is a happy number.

261264404462162 is nontrivially palindromic in base 10.

261264404462162 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 231010543338961 + 30253861123201 = 15199031^2 + 5500351^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 261264404462162.

It is not an unprimeable number, because it can be changed into a prime (261264404462161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65316101115539 + ... + 65316101115542.

Almost surely, 2^{261264404462162} is an apocalyptic number.

261264404462162 is a deficient number, since it is larger than the sum of its proper divisors (130632202231084).

261264404462162 is a wasteful number, since it uses less digits than its factorization.

261264404462162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130632202231083.

The product of its (nonzero) digits is 5308416, while the sum is 50.

The spelling of 261264404462162 in words is "two hundred sixty-one trillion, two hundred sixty-four billion, four hundred four million, four hundred sixty-two thousand, one hundred sixty-two".