43749376373 has 2 divisors, whose sum is σ = 43749376374. Its totient is φ = 43749376372.

The previous prime is 43749376361. The next prime is 43749376409. The reversal of 43749376373 is 37367394734.

43749376373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27262302769 + 16487073604 = 165113^2 + 128402^2 .

It is a cyclic number.

It is not a de Polignac number, because 43749376373 - 2¹⁸ = 43749114229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43749376273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21874688186 + 21874688187.

It is an arithmetic number, because the mean of its divisors is an integer number (21874688187).

Almost surely, 2^43749376373 is an apocalyptic number.

It is an amenable number.

43749376373 is a deficient number, since it is larger than the sum of its proper divisors (1).

43749376373 is an equidigital number, since it uses as much as digits as its factorization.

43749376373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24004512, while the sum is 56.

The spelling of 43749376373 in words is "forty-three billion, seven hundred forty-nine million, three hundred seventy-six thousand, three hundred seventy-three".