44121439961 has 2 divisors, whose sum is σ = 44121439962. Its totient is φ = 44121439960.

The previous prime is 44121439949. The next prime is 44121440023. The reversal of 44121439961 is 16993412144.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31211935561 + 12909504400 = 176669^2 + 113620^2 .

It is a cyclic number.

It is not a de Polignac number, because 44121439961 - 2⁶ = 44121439897 is a prime.

It is not a weakly prime, because it can be changed into another prime (44121438961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22060719980 + 22060719981.

It is an arithmetic number, because the mean of its divisors is an integer number (22060719981).

Almost surely, 2^44121439961 is an apocalyptic number.

It is an amenable number.

44121439961 is a deficient number, since it is larger than the sum of its proper divisors (1).

44121439961 is an equidigital number, since it uses as much as digits as its factorization.

44121439961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The spelling of 44121439961 in words is "forty-four billion, one hundred twenty-one million, four hundred thirty-nine thousand, nine hundred sixty-one".