232781780427 has 16 divisors (see below), whose sum is σ = 364301989632. Its totient is φ = 129423074400.

The previous prime is 232781780401. The next prime is 232781780437. The reversal of 232781780427 is 724087187232.

It is a happy number.

It is not a de Polignac number, because 232781780427 - 2⁸ = 232781780171 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 232781780427.

It is not an unprimeable number, because it can be changed into a prime (232781780437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149794449 + ... + 149796002.

It is an arithmetic number, because the mean of its divisors is an integer number (22768874352).

Almost surely, 2^232781780427 is an apocalyptic number.

232781780427 is a deficient number, since it is larger than the sum of its proper divisors (131520209205).

232781780427 is a wasteful number, since it uses less digits than its factorization.

232781780427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299590498.

The product of its (nonzero) digits is 2107392, while the sum is 51.

The spelling of 232781780427 in words is "two hundred thirty-two billion, seven hundred eighty-one million, seven hundred eighty thousand, four hundred twenty-seven".