403665213241 has 4 divisors (see below), whose sum is σ = 424910750800. Its totient is φ = 382419675684.

The previous prime is 403665213233. The next prime is 403665213247. The reversal of 403665213241 is 142312566304.

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 403665213241 - 2³ = 403665213233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 403665213241.

It is not an unprimeable number, because it can be changed into a prime (403665213247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10622768751 + ... + 10622768788.

It is an arithmetic number, because the mean of its divisors is an integer number (106227687700).

Almost surely, 2^403665213241 is an apocalyptic number.

It is an amenable number.

403665213241 is a deficient number, since it is larger than the sum of its proper divisors (21245537559).

403665213241 is a wasteful number, since it uses less digits than its factorization.

403665213241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21245537558.

The product of its (nonzero) digits is 103680, while the sum is 37.

Adding to 403665213241 its reverse (142312566304), we get a palindrome (545977779545).

The spelling of 403665213241 in words is "four hundred three billion, six hundred sixty-five million, two hundred thirteen thousand, two hundred forty-one".