44001649873 has 2 divisors, whose sum is σ = 44001649874. Its totient is φ = 44001649872.

The previous prime is 44001649817. The next prime is 44001649883. The reversal of 44001649873 is 37894610044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37638716049 + 6362933824 = 194007^2 + 79768^2 .

It is a cyclic number.

It is not a de Polignac number, because 44001649873 - 2⁹ = 44001649361 is a prime.

It is a super-2 number, since 2×44001649873² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (44001649883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22000824936 + 22000824937.

It is an arithmetic number, because the mean of its divisors is an integer number (22000824937).

Almost surely, 2^44001649873 is an apocalyptic number.

It is an amenable number.

44001649873 is a deficient number, since it is larger than the sum of its proper divisors (1).

44001649873 is an equidigital number, since it uses as much as digits as its factorization.

44001649873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 46.

The spelling of 44001649873 in words is "forty-four billion, one million, six hundred forty-nine thousand, eight hundred seventy-three".