261344423432 has 16 divisors (see below), whose sum is σ = 505827916800. Its totient is φ = 126456978960.

The previous prime is 261344423413. The next prime is 261344423453. The reversal of 261344423432 is 234324443162.

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, 526903832 + ... + 526904327.

It is an arithmetic number, because the mean of its divisors is an integer number (31614244800).

Almost surely, 2^261344423432 is an apocalyptic number.

It is an amenable number.

261344423432 is a deficient number, since it is larger than the sum of its proper divisors (244483493368).

261344423432 is a wasteful number, since it uses less digits than its factorization.

261344423432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053808196 (or 1053808192 counting only the distinct ones).

The product of its digits is 331776, while the sum is 38.

Adding to 261344423432 its reverse (234324443162), we get a palindrome (495668866594).

The spelling of 261344423432 in words is "two hundred sixty-one billion, three hundred forty-four million, four hundred twenty-three thousand, four hundred thirty-two".