61310425266 has 24 divisors (see below), whose sum is σ = 136079238204. Its totient is φ = 19938349440.

The previous prime is 61310425261. The next prime is 61310425273. The reversal of 61310425266 is 66252401316.

61310425266 is a `hidden beast` number, since 61 + 31 + 0 + 42 + 526 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 46711744641 + 14598680625 = 216129^2 + 120825^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61310425266.

It is not an unprimeable number, because it can be changed into a prime (61310425261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41537491 + ... + 41538966.

Almost surely, 2^61310425266 is an apocalyptic number.

61310425266 is an abundant number, since it is smaller than the sum of its proper divisors (74768812938).

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

61310425266 is a wasteful number, since it uses less digits than its factorization.

61310425266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83076506 (or 83076503 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 61310425266 in words is "sixty-one billion, three hundred ten million, four hundred twenty-five thousand, two hundred sixty-six".