66076651110761 has 8 divisors (see below), whose sum is σ = 68079873190344. Its totient is φ = 64103106395520.

The previous prime is 66076651110739. The next prime is 66076651110791. The reversal of 66076651110761 is 16701115667066.

It can be written as a sum of positive squares in 4 ways, for example, as 331797888361 + 65744853222400 = 576019^2 + 8108320^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66076651110761 is a prime.

It is a super-2 number, since 2×66076651110761² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66076651110791) 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, 7419336566 + ... + 7419345471.

It is an arithmetic number, because the mean of its divisors is an integer number (8509984148793).

Almost surely, 2^{66076651110761} is an apocalyptic number.

66076651110761 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

66076651110761 is a deficient number, since it is larger than the sum of its proper divisors (2003222079583).

66076651110761 is a wasteful number, since it uses less digits than its factorization.

66076651110761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14838682171.

The product of its (nonzero) digits is 1905120, while the sum is 53.

The spelling of 66076651110761 in words is "sixty-six trillion, seventy-six billion, six hundred fifty-one million, one hundred ten thousand, seven hundred sixty-one".