11853745445 has 4 divisors (see below), whose sum is σ = 14224494540. Its totient is φ = 9482996352.

The previous prime is 11853745399. The next prime is 11853745459. The reversal of 11853745445 is 54454735811.

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 4611224836 + 7242520609 = 67906^2 + 85103^2 .

It is a cyclic number.

It is not a de Polignac number, because 11853745445 - 2¹⁶ = 11853679909 is a prime.

It is a super-2 number, since 2×11853745445² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11853745445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1185374540 + ... + 1185374549.

It is an arithmetic number, because the mean of its divisors is an integer number (3556123635).

Almost surely, 2^11853745445 is an apocalyptic number.

It is an amenable number.

11853745445 is a deficient number, since it is larger than the sum of its proper divisors (2370749095).

11853745445 is an equidigital number, since it uses as much as digits as its factorization.

11853745445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2370749094.

The product of its digits is 1344000, while the sum is 47.

The spelling of 11853745445 in words is "eleven billion, eight hundred fifty-three million, seven hundred forty-five thousand, four hundred forty-five".