11512355621153 has 4 divisors (see below), whose sum is σ = 11588596387008. Its totient is φ = 11436114855300.

The previous prime is 11512355621141. The next prime is 11512355621161. The reversal of 11512355621153 is 35112655321511.

It is a happy number.

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 11512355621153 - 2⁶ = 11512355621089 is a prime.

It is a super-2 number, since 2×11512355621153² (a number of 27 digits) contains 22 as substring.

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 11512355621153.

It is not an unprimeable number, because it can be changed into a prime (11512355627153) 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, 38120382701 + ... + 38120383002.

It is an arithmetic number, because the mean of its divisors is an integer number (2897149096752).

Almost surely, 2^{11512355621153} is an apocalyptic number.

It is an amenable number.

11512355621153 is a deficient number, since it is larger than the sum of its proper divisors (76240765855).

11512355621153 is an equidigital number, since it uses as much as digits as its factorization.

11512355621153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76240765854.

The product of its digits is 135000, while the sum is 41.

The spelling of 11512355621153 in words is "eleven trillion, five hundred twelve billion, three hundred fifty-five million, six hundred twenty-one thousand, one hundred fifty-three".