66760663325551 has 8 divisors (see below), whose sum is σ = 72096366656160. Its totient is φ = 61453569664992.

The previous prime is 66760663325533. The next prime is 66760663325567. The reversal of 66760663325551 is 15552336606766.

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 66760663325551 - 2⁴¹ = 64561640069999 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 66760663325551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66760663325651) 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, 7152412660 + ... + 7152421993.

It is an arithmetic number, because the mean of its divisors is an integer number (9012045832020).

Almost surely, 2^{66760663325551} is an apocalyptic number.

66760663325551 is a deficient number, since it is larger than the sum of its proper divisors (5335703330609).

66760663325551 is a wasteful number, since it uses less digits than its factorization.

66760663325551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14304835025.

The product of its (nonzero) digits is 122472000, while the sum is 61.

The spelling of 66760663325551 in words is "sixty-six trillion, seven hundred sixty billion, six hundred sixty-three million, three hundred twenty-five thousand, five hundred fifty-one".