66435102443 has 4 divisors (see below), whose sum is σ = 67235525448. Its totient is φ = 65634679440.

The previous prime is 66435102421. The next prime is 66435102457. The reversal of 66435102443 is 34420153466.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66435102443 - 2¹² = 66435098347 is a prime.

It is a super-2 number, since 2×66435102443² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66435102397 and 66435102406.

It is not an unprimeable number, because it can be changed into a prime (66435102143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 400211378 + ... + 400211543.

It is an arithmetic number, because the mean of its divisors is an integer number (16808881362).

Almost surely, 2^66435102443 is an apocalyptic number.

66435102443 is a deficient number, since it is larger than the sum of its proper divisors (800423005).

66435102443 is an equidigital number, since it uses as much as digits as its factorization.

66435102443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800423004.

The product of its (nonzero) digits is 207360, while the sum is 38.

The spelling of 66435102443 in words is "sixty-six billion, four hundred thirty-five million, one hundred two thousand, four hundred forty-three".