43980725447 has 2 divisors, whose sum is σ = 43980725448. Its totient is φ = 43980725446.

The previous prime is 43980725423. The next prime is 43980725527. The reversal of 43980725447 is 74452708934.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43980725447 - 2¹⁰ = 43980724423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43980725407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21990362723 + 21990362724.

It is an arithmetic number, because the mean of its divisors is an integer number (21990362724).

Almost surely, 2^43980725447 is an apocalyptic number.

43980725447 is a deficient number, since it is larger than the sum of its proper divisors (1).

43980725447 is an equidigital number, since it uses as much as digits as its factorization.

43980725447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 53.

The spelling of 43980725447 in words is "forty-three billion, nine hundred eighty million, seven hundred twenty-five thousand, four hundred forty-seven".