43943924551 has 2 divisors, whose sum is σ = 43943924552. Its totient is φ = 43943924550.

The previous prime is 43943924533. The next prime is 43943924621. The reversal of 43943924551 is 15542934934.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43943924551 - 2¹⁷ = 43943793479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43943924495 and 43943924504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43943924251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21971962275 + 21971962276.

It is an arithmetic number, because the mean of its divisors is an integer number (21971962276).

Almost surely, 2^43943924551 is an apocalyptic number.

43943924551 is a deficient number, since it is larger than the sum of its proper divisors (1).

43943924551 is an equidigital number, since it uses as much as digits as its factorization.

43943924551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 49.

The spelling of 43943924551 in words is "forty-three billion, nine hundred forty-three million, nine hundred twenty-four thousand, five hundred fifty-one".