66151681307 has 16 divisors (see below), whose sum is σ = 71555882112. Its totient is φ = 60916423680.

The previous prime is 66151681261. The next prime is 66151681319. The reversal of 66151681307 is 70318615166.

It is not a de Polignac number, because 66151681307 - 2⁸ = 66151681051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66151681327) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2923457 + ... + 2945997.

It is an arithmetic number, because the mean of its divisors is an integer number (4472242632).

Almost surely, 2^66151681307 is an apocalyptic number.

66151681307 is a deficient number, since it is larger than the sum of its proper divisors (5404200805).

66151681307 is a wasteful number, since it uses less digits than its factorization.

66151681307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26278.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 66151681307 in words is "sixty-six billion, one hundred fifty-one million, six hundred eighty-one thousand, three hundred seven".