43220423153 has 2 divisors, whose sum is σ = 43220423154. Its totient is φ = 43220423152.

The previous prime is 43220423123. The next prime is 43220423179. The reversal of 43220423153 is 35132402234.

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., 43067455729 + 152967424 = 207527^2 + 12368^2 .

It is a cyclic number.

It is not a de Polignac number, because 43220423153 - 2¹⁶ = 43220357617 is a prime.

It is a super-2 number, since 2×43220423153² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43220423123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21610211576 + 21610211577.

It is an arithmetic number, because the mean of its divisors is an integer number (21610211577).

Almost surely, 2^43220423153 is an apocalyptic number.

It is an amenable number.

43220423153 is a deficient number, since it is larger than the sum of its proper divisors (1).

43220423153 is an equidigital number, since it uses as much as digits as its factorization.

43220423153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 29.

Adding to 43220423153 its reverse (35132402234), we get a palindrome (78352825387).

The spelling of 43220423153 in words is "forty-three billion, two hundred twenty million, four hundred twenty-three thousand, one hundred fifty-three".