66748280162511 has 8 divisors (see below), whose sum is σ = 88997755819824. Its totient is φ = 44498828973440.

The previous prime is 66748280162507. The next prime is 66748280162533. The reversal of 66748280162511 is 11526108284766.

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 66748280162511 - 2² = 66748280162507 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66748280166511) 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, 1661065 + ... + 11672861.

It is an arithmetic number, because the mean of its divisors is an integer number (11124719477478).

Almost surely, 2^{66748280162511} is an apocalyptic number.

66748280162511 is a deficient number, since it is larger than the sum of its proper divisors (22249475657313).

66748280162511 is a wasteful number, since it uses less digits than its factorization.

66748280162511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12234121.

The product of its (nonzero) digits is 7741440, while the sum is 57.

The spelling of 66748280162511 in words is "sixty-six trillion, seven hundred forty-eight billion, two hundred eighty million, one hundred sixty-two thousand, five hundred eleven".