11943128256645 has 16 divisors (see below), whose sum is σ = 19432886656320. Its totient is φ = 6261707921664.

The previous prime is 11943128256629. The next prime is 11943128256659. The reversal of 11943128256645 is 54665282134911.

It is a happy number.

It is not a de Polignac number, because 11943128256645 - 2⁴ = 11943128256629 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 6747529204 + ... + 6747530973.

It is an arithmetic number, because the mean of its divisors is an integer number (1214555416020).

Almost surely, 2^{11943128256645} is an apocalyptic number.

11943128256645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11943128256645 is a deficient number, since it is larger than the sum of its proper divisors (7489758399675).

11943128256645 is a wasteful number, since it uses less digits than its factorization.

11943128256645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13495060244.

The product of its digits is 12441600, while the sum is 57.

The spelling of 11943128256645 in words is "eleven trillion, nine hundred forty-three billion, one hundred twenty-eight million, two hundred fifty-six thousand, six hundred forty-five".