261046321424 has 20 divisors (see below), whose sum is σ = 578031140544. Its totient is φ = 111876994848.

The previous prime is 261046321391. The next prime is 261046321469. The reversal of 261046321424 is 424123640162.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165385252 + ... + 1165385475.

Almost surely, 2^261046321424 is an apocalyptic number.

It is an amenable number.

261046321424 is an abundant number, since it is smaller than the sum of its proper divisors (316984819120).

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

261046321424 is a wasteful number, since it uses less digits than its factorization.

261046321424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2330770742 (or 2330770736 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 261046321424 its reverse (424123640162), we get a palindrome (685169961586).

The spelling of 261046321424 in words is "two hundred sixty-one billion, forty-six million, three hundred twenty-one thousand, four hundred twenty-four".