664412657403442 has 16 divisors (see below), whose sum is σ = 997918201734912. Its totient is φ = 331773284630160.

The previous prime is 664412657403427. The next prime is 664412657403463. The reversal of 664412657403442 is 244304756214466.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40962748 + ... + 54834040.

It is an arithmetic number, because the mean of its divisors is an integer number (62369887608432).

Almost surely, 2^{664412657403442} is an apocalyptic number.

664412657403442 is a deficient number, since it is larger than the sum of its proper divisors (333505544331470).

664412657403442 is a wasteful number, since it uses less digits than its factorization.

664412657403442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13902513.

The product of its (nonzero) digits is 92897280, while the sum is 58.

The spelling of 664412657403442 in words is "six hundred sixty-four trillion, four hundred twelve billion, six hundred fifty-seven million, four hundred three thousand, four hundred forty-two".