664402545430 has 32 divisors (see below), whose sum is σ = 1306058499648. Its totient is φ = 241862678400.

The previous prime is 664402545379. The next prime is 664402545431. The reversal of 664402545430 is 34545204466.

664402545430 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-4 number, since 4×664402545430⁴ (a number of 48 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (664402545431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35982241 + ... + 36000700.

It is an arithmetic number, because the mean of its divisors is an integer number (40814328114).

Almost surely, 2^664402545430 is an apocalyptic number.

664402545430 is a deficient number, since it is larger than the sum of its proper divisors (641655954218).

664402545430 is a wasteful number, since it uses less digits than its factorization.

664402545430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71983032.

The product of its (nonzero) digits is 1382400, while the sum is 43.

Adding to 664402545430 its reverse (34545204466), we get a palindrome (698947749896).

The spelling of 664402545430 in words is "six hundred sixty-four billion, four hundred two million, five hundred forty-five thousand, four hundred thirty".