43620435275251 has 2 divisors, whose sum is σ = 43620435275252. Its totient is φ = 43620435275250.

The previous prime is 43620435275203. The next prime is 43620435275311. The reversal of 43620435275251 is 15257253402634.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43620435275251 is a prime.

It is a super-2 number, since 2×43620435275251² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43620435275195 and 43620435275204.

It is not a weakly prime, because it can be changed into another prime (43620435272251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21810217637625 + 21810217637626.

It is an arithmetic number, because the mean of its divisors is an integer number (21810217637626).

Almost surely, 2^{43620435275251} is an apocalyptic number.

43620435275251 is a deficient number, since it is larger than the sum of its proper divisors (1).

43620435275251 is an equidigital number, since it uses as much as digits as its factorization.

43620435275251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048000, while the sum is 49.

Adding to 43620435275251 its reverse (15257253402634), we get a palindrome (58877688677885).

The spelling of 43620435275251 in words is "forty-three trillion, six hundred twenty billion, four hundred thirty-five million, two hundred seventy-five thousand, two hundred fifty-one".