66646234435 has 32 divisors (see below), whose sum is σ = 90310567680. Its totient is φ = 46769520000.

The previous prime is 66646234429. The next prime is 66646234451. The reversal of 66646234435 is 53443264666.

It is a happy number.

66646234435 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66646234435 - 2¹⁵ = 66646201667 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2736060 + ... + 2760310.

It is an arithmetic number, because the mean of its divisors is an integer number (2822205240).

Almost surely, 2^66646234435 is an apocalyptic number.

66646234435 is a deficient number, since it is larger than the sum of its proper divisors (23664333245).

66646234435 is a wasteful number, since it uses less digits than its factorization.

66646234435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26019.

The product of its digits is 7464960, while the sum is 49.

The spelling of 66646234435 in words is "sixty-six billion, six hundred forty-six million, two hundred thirty-four thousand, four hundred thirty-five".