44155455139 has 2 divisors, whose sum is σ = 44155455140. Its totient is φ = 44155455138.

The previous prime is 44155455077. The next prime is 44155455167. The reversal of 44155455139 is 93155455144.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 44155455139 - 2⁷ = 44155455011 is a prime.

It is not a weakly prime, because it can be changed into another prime (44155455739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22077727569 + 22077727570.

It is an arithmetic number, because the mean of its divisors is an integer number (22077727570).

Almost surely, 2^44155455139 is an apocalyptic number.

44155455139 is a deficient number, since it is larger than the sum of its proper divisors (1).

44155455139 is an equidigital number, since it uses as much as digits as its factorization.

44155455139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1080000, while the sum is 46.

The spelling of 44155455139 in words is "forty-four billion, one hundred fifty-five million, four hundred fifty-five thousand, one hundred thirty-nine".