66736707066674 has 4 divisors (see below), whose sum is σ = 100105060600014. Its totient is φ = 33368353533336.

The previous prime is 66736707066553. The next prime is 66736707066791. The reversal of 66736707066674 is 47666070763766.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 40264189995649 + 26472517071025 = 6345407^2 + 5145145^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66736707066598 and 66736707066607.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16684176766667 + ... + 16684176766670.

Almost surely, 2^{66736707066674} is an apocalyptic number.

66736707066674 is a deficient number, since it is larger than the sum of its proper divisors (33368353533340).

66736707066674 is a wasteful number, since it uses less digits than its factorization.

66736707066674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33368353533339.

The product of its (nonzero) digits is 1344252672, while the sum is 71.

The spelling of 66736707066674 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred seven million, sixty-six thousand, six hundred seventy-four".