11553352505 has 4 divisors (see below), whose sum is σ = 13864023012. Its totient is φ = 9242682000.

The previous prime is 11553352501. The next prime is 11553352549. The reversal of 11553352505 is 50525335511.

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 4564894096 + 6988458409 = 67564^2 + 83597^2 .

It is not a de Polignac number, because 11553352505 - 2² = 11553352501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11553352501) 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, 1155335246 + ... + 1155335255.

It is an arithmetic number, because the mean of its divisors is an integer number (3466005753).

Almost surely, 2^11553352505 is an apocalyptic number.

It is an amenable number.

11553352505 is a deficient number, since it is larger than the sum of its proper divisors (2310670507).

11553352505 is an equidigital number, since it uses as much as digits as its factorization.

11553352505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2310670506.

The product of its (nonzero) digits is 56250, while the sum is 35.

The spelling of 11553352505 in words is "eleven billion, five hundred fifty-three million, three hundred fifty-two thousand, five hundred five".