426660616918 has 12 divisors (see below), whose sum is σ = 642749619708. Its totient is φ = 212414673680.

The previous prime is 426660616883. The next prime is 426660616939. The reversal of 426660616918 is 819616066624.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1856188 + ... + 2073343.

It is an arithmetic number, because the mean of its divisors is an integer number (53562468309).

Almost surely, 2^426660616918 is an apocalyptic number.

426660616918 is a deficient number, since it is larger than the sum of its proper divisors (216089002790).

426660616918 is an equidigital number, since it uses as much as digits as its factorization.

426660616918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929999 (or 3929766 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 426660616918 in words is "four hundred twenty-six billion, six hundred sixty million, six hundred sixteen thousand, nine hundred eighteen".