44426400181 has 2 divisors, whose sum is σ = 44426400182. Its totient is φ = 44426400180.

The previous prime is 44426400163. The next prime is 44426400211. The reversal of 44426400181 is 18100462444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34890877681 + 9535522500 = 186791^2 + 97650^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44426400181 is a prime.

It is a super-2 number, since 2×44426400181² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44426400131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22213200090 + 22213200091.

It is an arithmetic number, because the mean of its divisors is an integer number (22213200091).

Almost surely, 2^44426400181 is an apocalyptic number.

It is an amenable number.

44426400181 is a deficient number, since it is larger than the sum of its proper divisors (1).

44426400181 is an equidigital number, since it uses as much as digits as its factorization.

44426400181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24576, while the sum is 34.

The spelling of 44426400181 in words is "forty-four billion, four hundred twenty-six million, four hundred thousand, one hundred eighty-one".