43149708851 has 2 divisors, whose sum is σ = 43149708852. Its totient is φ = 43149708850.

The previous prime is 43149708841. The next prime is 43149708949. The reversal of 43149708851 is 15880794134.

It is a happy number.

43149708851 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 is a cyclic number.

It is not a de Polignac number, because 43149708851 - 2⁶ = 43149708787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43149708851.

It is not a weakly prime, because it can be changed into another prime (43149708841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21574854425 + 21574854426.

It is an arithmetic number, because the mean of its divisors is an integer number (21574854426).

Almost surely, 2^43149708851 is an apocalyptic number.

43149708851 is a deficient number, since it is larger than the sum of its proper divisors (1).

43149708851 is an equidigital number, since it uses as much as digits as its factorization.

43149708851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 43149708851 in words is "forty-three billion, one hundred forty-nine million, seven hundred eight thousand, eight hundred fifty-one".