4936433943991 has 4 divisors (see below), whose sum is σ = 5385200666184. Its totient is φ = 4487667221800.

The previous prime is 4936433943949. The next prime is 4936433944007. The reversal of 4936433943991 is 1993493346394.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4936433943991 - 2³⁷ = 4798994990519 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4936433943491) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 224383361080 + ... + 224383361101.

It is an arithmetic number, because the mean of its divisors is an integer number (1346300166546).

Almost surely, 2^{4936433943991} is an apocalyptic number.

4936433943991 is a deficient number, since it is larger than the sum of its proper divisors (448766722193).

4936433943991 is a wasteful number, since it uses less digits than its factorization.

4936433943991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448766722192.

The product of its digits is 204073344, while the sum is 67.

The spelling of 4936433943991 in words is "four trillion, nine hundred thirty-six billion, four hundred thirty-three million, nine hundred forty-three thousand, nine hundred ninety-one".