265642350403 has 8 divisors (see below), whose sum is σ = 280534358720. Its totient is φ = 250841425320.

The previous prime is 265642350349. The next prime is 265642350437. The reversal of 265642350403 is 304053246562.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-265642350403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (265642350473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22764813 + ... + 22776478.

It is an arithmetic number, because the mean of its divisors is an integer number (35066794840).

Almost surely, 2^265642350403 is an apocalyptic number.

265642350403 is a deficient number, since it is larger than the sum of its proper divisors (14892008317).

265642350403 is a wasteful number, since it uses less digits than its factorization.

265642350403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45541617.

The product of its (nonzero) digits is 518400, while the sum is 40.

Adding to 265642350403 its reverse (304053246562), we get a palindrome (569695596965).

The spelling of 265642350403 in words is "two hundred sixty-five billion, six hundred forty-two million, three hundred fifty thousand, four hundred three".