426660616917 has 64 divisors (see below), whose sum is σ = 693903974400. Its totient is φ = 258087928320.

The previous prime is 426660616883. The next prime is 426660616939. The reversal of 426660616917 is 719616066624.

It is not a de Polignac number, because 426660616917 - 2⁶ = 426660616853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (426660616957) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1404298 + ... + 1680884.

It is an arithmetic number, because the mean of its divisors is an integer number (10842249600).

Almost surely, 2^426660616917 is an apocalyptic number.

It is an amenable number.

426660616917 is a deficient number, since it is larger than the sum of its proper divisors (267243357483).

426660616917 is a wasteful number, since it uses less digits than its factorization.

426660616917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276743 (or 276737 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 54.

The spelling of 426660616917 in words is "four hundred twenty-six billion, six hundred sixty million, six hundred sixteen thousand, nine hundred seventeen".