664702164230143 has 4 divisors (see below), whose sum is σ = 715833099940168. Its totient is φ = 613571228520120.

The previous prime is 664702164230141. The next prime is 664702164230161. The reversal of 664702164230143 is 341032461207466.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 664702164230143 - 2¹ = 664702164230141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664702164230141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25565467854993 + ... + 25565467855018.

It is an arithmetic number, because the mean of its divisors is an integer number (178958274985042).

Almost surely, 2^{664702164230143} is an apocalyptic number.

664702164230143 is a deficient number, since it is larger than the sum of its proper divisors (51130935710025).

664702164230143 is a wasteful number, since it uses less digits than its factorization.

664702164230143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51130935710024.

The product of its (nonzero) digits is 3483648, while the sum is 49.

The spelling of 664702164230143 in words is "six hundred sixty-four trillion, seven hundred two billion, one hundred sixty-four million, two hundred thirty thousand, one hundred forty-three".