263221062401 has 24 divisors (see below), whose sum is σ = 294381880800. Its totient is φ = 235114228800.

The previous prime is 263221062359. The next prime is 263221062407. The reversal of 263221062401 is 104260122362.

It is not a de Polignac number, because 263221062401 - 2¹⁴ = 263221046017 is a prime.

It is a super-2 number, since 2×263221062401² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263221062407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15547421 + ... + 15564341.

It is an arithmetic number, because the mean of its divisors is an integer number (12265911700).

Almost surely, 2^263221062401 is an apocalyptic number.

It is an amenable number.

263221062401 is a deficient number, since it is larger than the sum of its proper divisors (31160818399).

263221062401 is a wasteful number, since it uses less digits than its factorization.

263221062401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19181 (or 19170 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

Adding to 263221062401 its reverse (104260122362), we get a palindrome (367481184763).

The spelling of 263221062401 in words is "two hundred sixty-three billion, two hundred twenty-one million, sixty-two thousand, four hundred one".