43602064123 has 2 divisors, whose sum is σ = 43602064124. Its totient is φ = 43602064122.

The previous prime is 43602064087. The next prime is 43602064213. The reversal of 43602064123 is 32146020634.

Together with next prime (43602064213) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43602064123 is a prime.

It is a super-2 number, since 2×43602064123² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43602664123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21801032061 + 21801032062.

It is an arithmetic number, because the mean of its divisors is an integer number (21801032062).

Almost surely, 2^43602064123 is an apocalyptic number.

43602064123 is a deficient number, since it is larger than the sum of its proper divisors (1).

43602064123 is an equidigital number, since it uses as much as digits as its factorization.

43602064123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 31.

Adding to 43602064123 its reverse (32146020634), we get a palindrome (75748084757).

The spelling of 43602064123 in words is "forty-three billion, six hundred two million, sixty-four thousand, one hundred twenty-three".