44153625661 has 2 divisors, whose sum is σ = 44153625662. Its totient is φ = 44153625660.

The previous prime is 44153625653. The next prime is 44153625671. The reversal of 44153625661 is 16652635144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37715970436 + 6437655225 = 194206^2 + 80235^2 .

It is a cyclic number.

It is not a de Polignac number, because 44153625661 - 2³ = 44153625653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44153625641) 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, 22076812830 + 22076812831.

It is an arithmetic number, because the mean of its divisors is an integer number (22076812831).

Almost surely, 2^44153625661 is an apocalyptic number.

It is an amenable number.

44153625661 is a deficient number, since it is larger than the sum of its proper divisors (1).

44153625661 is an equidigital number, since it uses as much as digits as its factorization.

44153625661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 518400, while the sum is 43.

The spelling of 44153625661 in words is "forty-four billion, one hundred fifty-three million, six hundred twenty-five thousand, six hundred sixty-one".