43754628889 has 2 divisors, whose sum is σ = 43754628890. Its totient is φ = 43754628888.

The previous prime is 43754628877. The next prime is 43754628913. The reversal of 43754628889 is 98882645734.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43049195289 + 705433600 = 207483^2 + 26560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43754628889 is a prime.

It is a super-2 number, since 2×43754628889² (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 43754628889.

It is not a weakly prime, because it can be changed into another prime (43754628839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21877314444 + 21877314445.

It is an arithmetic number, because the mean of its divisors is an integer number (21877314445).

Almost surely, 2^43754628889 is an apocalyptic number.

It is an amenable number.

43754628889 is a deficient number, since it is larger than the sum of its proper divisors (1).

43754628889 is an equidigital number, since it uses as much as digits as its factorization.

43754628889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 92897280, while the sum is 64.

The spelling of 43754628889 in words is "forty-three billion, seven hundred fifty-four million, six hundred twenty-eight thousand, eight hundred eighty-nine".