66455360336501 has 4 divisors (see below), whose sum is σ = 66770314651104. Its totient is φ = 66140406021900.

The previous prime is 66455360336483. The next prime is 66455360336503. The reversal of 66455360336501 is 10563306355466.

It is a happy number.

66455360336501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66455360336501 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 (66455360336503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157477156985 + ... + 157477157406.

It is an arithmetic number, because the mean of its divisors is an integer number (16692578662776).

Almost surely, 2^{66455360336501} is an apocalyptic number.

It is an amenable number.

66455360336501 is a deficient number, since it is larger than the sum of its proper divisors (314954314603).

66455360336501 is a wasteful number, since it uses less digits than its factorization.

66455360336501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314954314602.

The product of its (nonzero) digits is 17496000, while the sum is 53.

The spelling of 66455360336501 in words is "sixty-six trillion, four hundred fifty-five billion, three hundred sixty million, three hundred thirty-six thousand, five hundred one".