44510019661 has 2 divisors, whose sum is σ = 44510019662. Its totient is φ = 44510019660.

The previous prime is 44510019641. The next prime is 44510019679. The reversal of 44510019661 is 16691001544.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22899255625 + 21610764036 = 151325^2 + 147006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44510019661 is a prime.

It is a super-2 number, since 2×44510019661² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 44510019661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44510019641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22255009830 + 22255009831.

It is an arithmetic number, because the mean of its divisors is an integer number (22255009831).

Almost surely, 2^44510019661 is an apocalyptic number.

It is an amenable number.

44510019661 is a deficient number, since it is larger than the sum of its proper divisors (1).

44510019661 is an equidigital number, since it uses as much as digits as its factorization.

44510019661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 37.

The spelling of 44510019661 in words is "forty-four billion, five hundred ten million, nineteen thousand, six hundred sixty-one".