43613070551 has 2 divisors, whose sum is σ = 43613070552. Its totient is φ = 43613070550.

The previous prime is 43613070539. The next prime is 43613070559. The reversal of 43613070551 is 15507031634.

43613070551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43613070551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43613070559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21806535275 + 21806535276.

It is an arithmetic number, because the mean of its divisors is an integer number (21806535276).

Almost surely, 2^43613070551 is an apocalyptic number.

43613070551 is a deficient number, since it is larger than the sum of its proper divisors (1).

43613070551 is an equidigital number, since it uses as much as digits as its factorization.

43613070551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37800, while the sum is 35.

The spelling of 43613070551 in words is "forty-three billion, six hundred thirteen million, seventy thousand, five hundred fifty-one".