261422566422352 has 40 divisors (see below), whose sum is σ = 509617669328064. Its totient is φ = 129908341914624.

The previous prime is 261422566422337. The next prime is 261422566422359. The reversal of 261422566422352 is 253224665224162.

It is a self number, because there is not a number n which added to its sum of digits gives 261422566422352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261422566422359) 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, 408700893 + ... + 409340035.

Almost surely, 2^{261422566422352} is an apocalyptic number.

It is an amenable number.

261422566422352 is a deficient number, since it is larger than the sum of its proper divisors (248195102905712).

261422566422352 is a wasteful number, since it uses less digits than its factorization.

261422566422352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796147 (or 796141 counting only the distinct ones).

The product of its digits is 16588800, while the sum is 52.

The spelling of 261422566422352 in words is "two hundred sixty-one trillion, four hundred twenty-two billion, five hundred sixty-six million, four hundred twenty-two thousand, three hundred fifty-two".