43181234278801 has 2 divisors, whose sum is σ = 43181234278802. Its totient is φ = 43181234278800.

The previous prime is 43181234278769. The next prime is 43181234278817. The reversal of 43181234278801 is 10887243218134.

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., 42803717427025 + 377516851776 = 6542455^2 + 614424^2 .

It is a cyclic number.

It is not a de Polignac number, because 43181234278801 - 2⁵ = 43181234278769 is a prime.

It is not a weakly prime, because it can be changed into another prime (43181234278891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21590617139400 + 21590617139401.

It is an arithmetic number, because the mean of its divisors is an integer number (21590617139401).

Almost surely, 2^{43181234278801} is an apocalyptic number.

It is an amenable number.

43181234278801 is a deficient number, since it is larger than the sum of its proper divisors (1).

43181234278801 is an equidigital number, since it uses as much as digits as its factorization.

43181234278801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 43181234278801 in words is "forty-three trillion, one hundred eighty-one billion, two hundred thirty-four million, two hundred seventy-eight thousand, eight hundred one".