2561467131266 has 8 divisors (see below), whose sum is σ = 4009252901184. Its totient is φ = 1225049497540.

The previous prime is 2561467131263. The next prime is 2561467131269. The reversal of 2561467131266 is 6621317641652.

It is an interprime number because it is at equal distance from previous prime (2561467131263) and next prime (2561467131269).

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

It is a super-2 number, since 2×2561467131266² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2561467131263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27842033990 + ... + 27842034081.

It is an arithmetic number, because the mean of its divisors is an integer number (501156612648).

Almost surely, 2^{2561467131266} is an apocalyptic number.

2561467131266 is a deficient number, since it is larger than the sum of its proper divisors (1447785769918).

2561467131266 is a wasteful number, since it uses less digits than its factorization.

2561467131266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55684068096.

The product of its digits is 2177280, while the sum is 50.

The spelling of 2561467131266 in words is "two trillion, five hundred sixty-one billion, four hundred sixty-seven million, one hundred thirty-one thousand, two hundred sixty-six".