44202039991 has 2 divisors, whose sum is σ = 44202039992. Its totient is φ = 44202039990.

The previous prime is 44202039989. The next prime is 44202040073. The reversal of 44202039991 is 19993020244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44202039991 - 2¹ = 44202039989 is a prime.

Together with 44202039989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44202039941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22101019995 + 22101019996.

It is an arithmetic number, because the mean of its divisors is an integer number (22101019996).

Almost surely, 2^44202039991 is an apocalyptic number.

44202039991 is a deficient number, since it is larger than the sum of its proper divisors (1).

44202039991 is an equidigital number, since it uses as much as digits as its factorization.

44202039991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 44202039991 in words is "forty-four billion, two hundred two million, thirty-nine thousand, nine hundred ninety-one".