66770012651 has 8 divisors (see below), whose sum is σ = 71752850640. Its totient is φ = 61904418048.

The previous prime is 66770012633. The next prime is 66770012671. The reversal of 66770012651 is 15621007766.

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 66770012651 - 2²² = 66765818347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66770012599 and 66770012608.

It is not an unprimeable number, because it can be changed into a prime (66770012671) 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, 29309666 + ... + 29311943.

It is an arithmetic number, because the mean of its divisors is an integer number (8969106330).

Almost surely, 2^66770012651 is an apocalyptic number.

66770012651 is a deficient number, since it is larger than the sum of its proper divisors (4982837989).

66770012651 is a wasteful number, since it uses less digits than its factorization.

66770012651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58621693.

The product of its (nonzero) digits is 105840, while the sum is 41.

The spelling of 66770012651 in words is "sixty-six billion, seven hundred seventy million, twelve thousand, six hundred fifty-one".