263320512001 has 4 divisors (see below), whose sum is σ = 263323012032. Its totient is φ = 263318011972.

The previous prime is 263320511989. The next prime is 263320512017. The reversal of 263320512001 is 100215023362.

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 263320512001 - 2⁵ = 263320511969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263320512041) 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, 1084741 + ... + 1305106.

It is an arithmetic number, because the mean of its divisors is an integer number (65830753008).

Almost surely, 2^263320512001 is an apocalyptic number.

It is an amenable number.

263320512001 is a deficient number, since it is larger than the sum of its proper divisors (2500031).

263320512001 is a wasteful number, since it uses less digits than its factorization.

263320512001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2500030.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 263320512001 its reverse (100215023362), we get a palindrome (363535535363).

The spelling of 263320512001 in words is "two hundred sixty-three billion, three hundred twenty million, five hundred twelve thousand, one".