11503424040365 has 4 divisors (see below), whose sum is σ = 13804108848444. Its totient is φ = 9202739232288.

The previous prime is 11503424040359. The next prime is 11503424040377. The reversal of 11503424040365 is 56304042430511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2199283068004 + 9304140972361 = 1482998^2 + 3050269^2 .

It is a cyclic number.

It is not a de Polignac number, because 11503424040365 - 2¹⁸ = 11503423778221 is a prime.

It is a super-2 number, since 2×11503424040365² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 1150342404032 + ... + 1150342404041.

It is an arithmetic number, because the mean of its divisors is an integer number (3451027212111).

Almost surely, 2^{11503424040365} is an apocalyptic number.

It is an amenable number.

11503424040365 is a deficient number, since it is larger than the sum of its proper divisors (2300684808079).

11503424040365 is an equidigital number, since it uses as much as digits as its factorization.

11503424040365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2300684808078.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 11503424040365 its reverse (56304042430511), we get a palindrome (67807466470876).

The spelling of 11503424040365 in words is "eleven trillion, five hundred three billion, four hundred twenty-four million, forty thousand, three hundred sixty-five".