66313745255 has 16 divisors (see below), whose sum is σ = 80014011840. Its totient is φ = 52759492608.

The previous prime is 66313745249. The next prime is 66313745287. The reversal of 66313745255 is 55254731366.

It is a cyclic number.

It is not a de Polignac number, because 66313745255 - 2⁸ = 66313744999 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3718901 + ... + 3736689.

It is an arithmetic number, because the mean of its divisors is an integer number (5000875740).

Almost surely, 2^66313745255 is an apocalyptic number.

66313745255 is a deficient number, since it is larger than the sum of its proper divisors (13700266585).

66313745255 is a wasteful number, since it uses less digits than its factorization.

66313745255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21850.

The product of its digits is 2268000, while the sum is 47.

The spelling of 66313745255 in words is "sixty-six billion, three hundred thirteen million, seven hundred forty-five thousand, two hundred fifty-five".