664119735612 has 24 divisors (see below), whose sum is σ = 1587408149712. Its totient is φ = 215973897600.

The previous prime is 664119735577. The next prime is 664119735619. The reversal of 664119735612 is 216537911466.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664119735619) 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, 674917939 + ... + 674918922.

It is an arithmetic number, because the mean of its divisors is an integer number (66142006238).

Almost surely, 2^664119735612 is an apocalyptic number.

It is an amenable number.

664119735612 is an abundant number, since it is smaller than the sum of its proper divisors (923288414100).

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

664119735612 is a wasteful number, since it uses less digits than its factorization.

664119735612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349836909 (or 1349836907 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 51.

The spelling of 664119735612 in words is "six hundred sixty-four billion, one hundred nineteen million, seven hundred thirty-five thousand, six hundred twelve".