664774143000 has 128 divisors (see below), whose sum is σ = 2262649559040. Its totient is φ = 161157360000.

The previous prime is 664774142993. The next prime is 664774143023. The reversal of 664774143000 is 341477466.

It is a super-2 number, since 2×664774143000² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10039336 + ... + 10105335.

It is an arithmetic number, because the mean of its divisors is an integer number (17676949680).

Almost surely, 2^664774143000 is an apocalyptic number.

664774143000 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

664774143000 is an abundant number, since it is smaller than the sum of its proper divisors (1597875416040).

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

664774143000 is a wasteful number, since it uses less digits than its factorization.

664774143000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20144706 (or 20144692 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 42.

The spelling of 664774143000 in words is "six hundred sixty-four billion, seven hundred seventy-four million, one hundred forty-three thousand".