43273314821761 has 2 divisors, whose sum is σ = 43273314821762. Its totient is φ = 43273314821760.

The previous prime is 43273314821699. The next prime is 43273314821767. The reversal of 43273314821761 is 16712841337234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32060735328400 + 11212579493361 = 5662220^2 + 3348519^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43273314821761 is a prime.

It is a super-2 number, since 2×43273314821761² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43273314821699 and 43273314821708.

It is not a weakly prime, because it can be changed into another prime (43273314821767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21636657410880 + 21636657410881.

It is an arithmetic number, because the mean of its divisors is an integer number (21636657410881).

Almost surely, 2^{43273314821761} is an apocalyptic number.

It is an amenable number.

43273314821761 is a deficient number, since it is larger than the sum of its proper divisors (1).

43273314821761 is an equidigital number, since it uses as much as digits as its factorization.

43273314821761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 52.

The spelling of 43273314821761 in words is "forty-three trillion, two hundred seventy-three billion, three hundred fourteen million, eight hundred twenty-one thousand, seven hundred sixty-one".