66570660751 has 8 divisors (see below), whose sum is σ = 76310609024. Its totient is φ = 56888175960.

The previous prime is 66570660733. The next prime is 66570660787. The reversal of 66570660751 is 15706607566.

It is a happy number.

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

It is not a de Polignac number, because 66570660751 - 2¹¹ = 66570658703 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66570660695 and 66570660704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66570660731) 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, 14363385 + ... + 14368018.

It is an arithmetic number, because the mean of its divisors is an integer number (9538826128).

Almost surely, 2^66570660751 is an apocalyptic number.

66570660751 is a deficient number, since it is larger than the sum of its proper divisors (9739948273).

66570660751 is a wasteful number, since it uses less digits than its factorization.

66570660751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28731741.

The product of its (nonzero) digits is 1587600, while the sum is 49.

The spelling of 66570660751 in words is "sixty-six billion, five hundred seventy million, six hundred sixty thousand, seven hundred fifty-one".