43424361481 has 2 divisors, whose sum is σ = 43424361482. Its totient is φ = 43424361480.

The previous prime is 43424361439. The next prime is 43424361511. The reversal of 43424361481 is 18416342434.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30935181456 + 12489180025 = 175884^2 + 111755^2 .

It is a cyclic number.

It is not a de Polignac number, because 43424361481 - 2²⁷ = 43290143753 is a prime.

It is a super-2 number, since 2×43424361481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43424331481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21712180740 + 21712180741.

It is an arithmetic number, because the mean of its divisors is an integer number (21712180741).

Almost surely, 2^43424361481 is an apocalyptic number.

It is an amenable number.

43424361481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43424361481 is an equidigital number, since it uses as much as digits as its factorization.

43424361481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 221184, while the sum is 40.

The spelling of 43424361481 in words is "forty-three billion, four hundred twenty-four million, three hundred sixty-one thousand, four hundred eighty-one".