426646405323240 has 32 divisors (see below), whose sum is σ = 1279939215970080. Its totient is φ = 113772374752832.

The previous prime is 426646405323197. The next prime is 426646405323241. The reversal of 426646405323240 is 42323504646624.

It is not an unprimeable number, because it can be changed into a prime (426646405323241) 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, 1777693355394 + ... + 1777693355633.

It is an arithmetic number, because the mean of its divisors is an integer number (39998100499065).

Almost surely, 2^{426646405323240} is an apocalyptic number.

426646405323240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426646405323240 is an abundant number, since it is smaller than the sum of its proper divisors (853292810646840).

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

426646405323240 is a wasteful number, since it uses less digits than its factorization.

426646405323240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3555386711041 (or 3555386711037 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 51.

Adding to 426646405323240 its reverse (42323504646624), we get a palindrome (468969909969864).

The spelling of 426646405323240 in words is "four hundred twenty-six trillion, six hundred forty-six billion, four hundred five million, three hundred twenty-three thousand, two hundred forty".