663072423432 has 32 divisors (see below), whose sum is σ = 1673775055680. Its totient is φ = 218878274880.

The previous prime is 663072423421. The next prime is 663072423437. The reversal of 663072423432 is 234324270366.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (663072423437) 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, 134114119 + ... + 134119062.

It is an arithmetic number, because the mean of its divisors is an integer number (52305470490).

Almost surely, 2^663072423432 is an apocalyptic number.

It is an amenable number.

663072423432 is an abundant number, since it is smaller than the sum of its proper divisors (1010702632248).

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

663072423432 is a wasteful number, since it uses less digits than its factorization.

663072423432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268233293 (or 268233289 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 42.

Adding to 663072423432 its reverse (234324270366), we get a palindrome (897396693798).

The spelling of 663072423432 in words is "six hundred sixty-three billion, seventy-two million, four hundred twenty-three thousand, four hundred thirty-two".