11554938443 has 2 divisors, whose sum is σ = 11554938444. Its totient is φ = 11554938442.

The previous prime is 11554938349. The next prime is 11554938463. The reversal of 11554938443 is 34483945511.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11554938443 - 2²⁶ = 11487829579 is a prime.

It is not a weakly prime, because it can be changed into another prime (11554938463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5777469221 + 5777469222.

It is an arithmetic number, because the mean of its divisors is an integer number (5777469222).

Almost surely, 2^11554938443 is an apocalyptic number.

11554938443 is a deficient number, since it is larger than the sum of its proper divisors (1).

11554938443 is an equidigital number, since it uses as much as digits as its factorization.

11554938443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 47.

The spelling of 11554938443 in words is "eleven billion, five hundred fifty-four million, nine hundred thirty-eight thousand, four hundred forty-three".