11553803465 has 4 divisors (see below), whose sum is σ = 13864564164. Its totient is φ = 9243042768.

The previous prime is 11553803453. The next prime is 11553803467. The reversal of 11553803465 is 56430835511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56430835511 = 33149 ⋅1702339.

It can be written as a sum of positive squares in 2 ways, for example, as 7580140096 + 3973663369 = 87064^2 + 63037^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11553803465 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11553803467) 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, 1155380342 + ... + 1155380351.

It is an arithmetic number, because the mean of its divisors is an integer number (3466141041).

Almost surely, 2^11553803465 is an apocalyptic number.

It is an amenable number.

11553803465 is a deficient number, since it is larger than the sum of its proper divisors (2310760699).

11553803465 is an equidigital number, since it uses as much as digits as its factorization.

11553803465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2310760698.

The product of its (nonzero) digits is 216000, while the sum is 41.

The spelling of 11553803465 in words is "eleven billion, five hundred fifty-three million, eight hundred three thousand, four hundred sixty-five".