11901223005643 has 2 divisors, whose sum is σ = 11901223005644. Its totient is φ = 11901223005642.

The previous prime is 11901223005577. The next prime is 11901223005689. The reversal of 11901223005643 is 34650032210911.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11901223005643 - 2³³ = 11892633071051 is a prime.

It is not a weakly prime, because it can be changed into another prime (11901223005043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5950611502821 + 5950611502822.

It is an arithmetic number, because the mean of its divisors is an integer number (5950611502822).

Almost surely, 2^{11901223005643} is an apocalyptic number.

11901223005643 is a deficient number, since it is larger than the sum of its proper divisors (1).

11901223005643 is an equidigital number, since it uses as much as digits as its factorization.

11901223005643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The spelling of 11901223005643 in words is "eleven trillion, nine hundred one billion, two hundred twenty-three million, five thousand, six hundred forty-three".