66344210450435 has 4 divisors (see below), whose sum is σ = 79613052540528. Its totient is φ = 53075368360344.

The previous prime is 66344210450431. The next prime is 66344210450467. The reversal of 66344210450435 is 53405401244366.

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 66344210450435 - 2² = 66344210450431 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66344210450435.

It is not an unprimeable number, because it can be changed into a prime (66344210450431) 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, 6634421045039 + ... + 6634421045048.

It is an arithmetic number, because the mean of its divisors is an integer number (19903263135132).

Almost surely, 2^{66344210450435} is an apocalyptic number.

66344210450435 is a deficient number, since it is larger than the sum of its proper divisors (13268842090093).

66344210450435 is a wasteful number, since it uses less digits than its factorization.

66344210450435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13268842090092.

The product of its (nonzero) digits is 4147200, while the sum is 47.

The spelling of 66344210450435 in words is "sixty-six trillion, three hundred forty-four billion, two hundred ten million, four hundred fifty thousand, four hundred thirty-five".