664023454201 has 4 divisors (see below), whose sum is σ = 665457630592. Its totient is φ = 662589277812.

The previous prime is 664023454189. The next prime is 664023454253. The reversal of 664023454201 is 102454320466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 664023454201 - 2²⁹ = 663486583289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664023454261) 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, 717087501 + ... + 717088426.

It is an arithmetic number, because the mean of its divisors is an integer number (166364407648).

Almost surely, 2^664023454201 is an apocalyptic number.

It is an amenable number.

664023454201 is a deficient number, since it is larger than the sum of its proper divisors (1434176391).

664023454201 is a wasteful number, since it uses less digits than its factorization.

664023454201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434176390.

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 664023454201 its reverse (102454320466), we get a palindrome (766477774667).

The spelling of 664023454201 in words is "six hundred sixty-four billion, twenty-three million, four hundred fifty-four thousand, two hundred one".