44847129689 has 2 divisors, whose sum is σ = 44847129690. Its totient is φ = 44847129688.

The previous prime is 44847129611. The next prime is 44847129751. The reversal of 44847129689 is 98692174844.

It is an a-pointer prime, because the next prime (44847129751) can be obtained adding 44847129689 to its sum of digits (62).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32366888464 + 12480241225 = 179908^2 + 111715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44847129689 is a prime.

It is a super-2 number, since 2×44847129689² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (44847129989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22423564844 + 22423564845.

It is an arithmetic number, because the mean of its divisors is an integer number (22423564845).

Almost surely, 2^44847129689 is an apocalyptic number.

It is an amenable number.

44847129689 is a deficient number, since it is larger than the sum of its proper divisors (1).

44847129689 is an equidigital number, since it uses as much as digits as its factorization.

44847129689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27869184, while the sum is 62.

The spelling of 44847129689 in words is "forty-four billion, eight hundred forty-seven million, one hundred twenty-nine thousand, six hundred eighty-nine".