665423354501426 has 8 divisors (see below), whose sum is σ = 1030332936002304. Its totient is φ = 321979042500660.

The previous prime is 665423354501417. The next prime is 665423354501431. The reversal of 665423354501426 is 624105453324566.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5366317374950 + ... + 5366317375073.

It is an arithmetic number, because the mean of its divisors is an integer number (128791617000288).

Almost surely, 2^{665423354501426} is an apocalyptic number.

665423354501426 is a deficient number, since it is larger than the sum of its proper divisors (364909581500878).

665423354501426 is a wasteful number, since it uses less digits than its factorization.

665423354501426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10732634750056.

The product of its (nonzero) digits is 62208000, while the sum is 56.

The spelling of 665423354501426 in words is "six hundred sixty-five trillion, four hundred twenty-three billion, three hundred fifty-four million, five hundred one thousand, four hundred twenty-six".