664328515492 has 12 divisors (see below), whose sum is σ = 1163316824320. Its totient is φ = 331952279976.

The previous prime is 664328515489. The next prime is 664328515517. The reversal of 664328515492 is 294515823466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52987392 + ... + 52999927.

Almost surely, 2^664328515492 is an apocalyptic number.

It is an amenable number.

664328515492 is a deficient number, since it is larger than the sum of its proper divisors (498988308828).

664328515492 is a wasteful number, since it uses less digits than its factorization.

664328515492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105988890 (or 105988888 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 55.

The spelling of 664328515492 in words is "six hundred sixty-four billion, three hundred twenty-eight million, five hundred fifteen thousand, four hundred ninety-two".