664360546662351 has 24 divisors (see below), whose sum is σ = 1196424187929984. Its totient is φ = 345122361902160.

The previous prime is 664360546662317. The next prime is 664360546662367. The reversal of 664360546662351 is 153266645063466.

It is not a de Polignac number, because 664360546662351 - 2⁹ = 664360546661839 is a prime.

It is a super-2 number, since 2×664360546662351² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664360546662311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 479336613061 + ... + 479336614446.

It is an arithmetic number, because the mean of its divisors is an integer number (49851007830416).

Almost surely, 2^{664360546662351} is an apocalyptic number.

664360546662351 is a deficient number, since it is larger than the sum of its proper divisors (532063641267633).

664360546662351 is a wasteful number, since it uses less digits than its factorization.

664360546662351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958673227531 (or 958673227528 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 63.

The spelling of 664360546662351 in words is "six hundred sixty-four trillion, three hundred sixty billion, five hundred forty-six million, six hundred sixty-two thousand, three hundred fifty-one".