44137434391 has 2 divisors, whose sum is σ = 44137434392. Its totient is φ = 44137434390.

The previous prime is 44137434389. The next prime is 44137434457. The reversal of 44137434391 is 19343473144.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 44137434391 - 2¹ = 44137434389 is a prime.

It is a super-2 number, since 2×44137434391² (a number of 22 digits) contains 22 as substring.

Together with 44137434389, 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 (44137434491) 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, 22068717195 + 22068717196.

It is an arithmetic number, because the mean of its divisors is an integer number (22068717196).

Almost surely, 2^44137434391 is an apocalyptic number.

44137434391 is a deficient number, since it is larger than the sum of its proper divisors (1).

44137434391 is an equidigital number, since it uses as much as digits as its factorization.

44137434391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 43.

The spelling of 44137434391 in words is "forty-four billion, one hundred thirty-seven million, four hundred thirty-four thousand, three hundred ninety-one".