261422445522036 has 48 divisors (see below), whose sum is σ = 613069715888000. Its totient is φ = 86700269158272.

The previous prime is 261422445521863. The next prime is 261422445522053. The reversal of 261422445522036 is 630225544224162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77177010 + ... + 80493078.

Almost surely, 2^{261422445522036} is an apocalyptic number.

It is an amenable number.

261422445522036 is an abundant number, since it is smaller than the sum of its proper divisors (351647270365964).

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

261422445522036 is a wasteful number, since it uses less digits than its factorization.

261422445522036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349288 (or 3349286 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 48.

Adding to 261422445522036 its reverse (630225544224162), we get a palindrome (891647989746198).

The spelling of 261422445522036 in words is "two hundred sixty-one trillion, four hundred twenty-two billion, four hundred forty-five million, five hundred twenty-two thousand, thirty-six".