663520152401 has 4 divisors (see below), whose sum is σ = 664023201600. Its totient is φ = 663017103204.

The previous prime is 663520152313. The next prime is 663520152437. The reversal of 663520152401 is 104251025366.

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 663520152401 - 2¹⁴ = 663520136017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663520151401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251522621 + ... + 251525258.

It is an arithmetic number, because the mean of its divisors is an integer number (166005800400).

Almost surely, 2^663520152401 is an apocalyptic number.

It is an amenable number.

663520152401 is a deficient number, since it is larger than the sum of its proper divisors (503049199).

663520152401 is a wasteful number, since it uses less digits than its factorization.

663520152401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 503049198.

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 663520152401 its reverse (104251025366), we get a palindrome (767771177767).

The spelling of 663520152401 in words is "six hundred sixty-three billion, five hundred twenty million, one hundred fifty-two thousand, four hundred one".