666673373737 has 8 divisors (see below), whose sum is σ = 772349584256. Its totient is φ = 563606452512.

The previous prime is 666673373659. The next prime is 666673373747. The reversal of 666673373737 is 737373376666.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-666673373737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (666673373747) 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, 652321773 + ... + 652322794.

It is an arithmetic number, because the mean of its divisors is an integer number (96543698032).

Almost surely, 2^666673373737 is an apocalyptic number.

It is an amenable number.

666673373737 is a deficient number, since it is larger than the sum of its proper divisors (105676210519).

666673373737 is a wasteful number, since it uses less digits than its factorization.

666673373737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304644647.

The product of its digits is 252047376, while the sum is 64.

The spelling of 666673373737 in words is "six hundred sixty-six billion, six hundred seventy-three million, three hundred seventy-three thousand, seven hundred thirty-seven".