66453345652223 has 8 divisors (see below), whose sum is σ = 68249512019088. Its totient is φ = 64657186127424.

The previous prime is 66453345652219. The next prime is 66453345652259. The reversal of 66453345652223 is 32225654335466.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66453345652223 - 2² = 66453345652219 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66453345652523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22574240 + ... + 25347642.

It is an arithmetic number, because the mean of its divisors is an integer number (8531189002386).

Almost surely, 2^{66453345652223} is an apocalyptic number.

66453345652223 is a deficient number, since it is larger than the sum of its proper divisors (1796166366865).

66453345652223 is a wasteful number, since it uses less digits than its factorization.

66453345652223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3421033.

The product of its digits is 93312000, while the sum is 56.

Adding to 66453345652223 its reverse (32225654335466), we get a palindrome (98678999987689).

The spelling of 66453345652223 in words is "sixty-six trillion, four hundred fifty-three billion, three hundred forty-five million, six hundred fifty-two thousand, two hundred twenty-three".