43745730049 has 48 divisors (see below), whose sum is σ = 54235640448. Its totient is φ = 35102715648.

The previous prime is 43745730031. The next prime is 43745730071. The reversal of 43745730049 is 94003754734.

43745730049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 43745730049 - 2¹³ = 43745721857 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43745729990 and 43745730008.

It is not an unprimeable number, because it can be changed into a prime (43745730019) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 36853434 + ... + 36854620.

It is an arithmetic number, because the mean of its divisors is an integer number (1129909176).

Almost surely, 2^43745730049 is an apocalyptic number.

43745730049 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

43745730049 is a deficient number, since it is larger than the sum of its proper divisors (10489910399).

43745730049 is a wasteful number, since it uses less digits than its factorization.

43745730049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1894 (or 1887 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 46.

The spelling of 43745730049 in words is "forty-three billion, seven hundred forty-five million, seven hundred thirty thousand, forty-nine".