66136233336651 has 6 divisors (see below), whose sum is σ = 95530114819620. Its totient is φ = 44090822224428.

The previous prime is 66136233336581. The next prime is 66136233336661. The reversal of 66136233336651 is 15663333263166.

66136233336651 is a `hidden beast` number, since 6 + 6 + 1 + 3 + 623 + 3 + 3 + 3 + 6 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 66136233336651 - 2¹⁵ = 66136233303883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66136233336661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3674235185361 + ... + 3674235185378.

It is an arithmetic number, because the mean of its divisors is an integer number (15921685803270).

Almost surely, 2^{66136233336651} is an apocalyptic number.

66136233336651 is a deficient number, since it is larger than the sum of its proper divisors (29393881482969).

66136233336651 is a wasteful number, since it uses less digits than its factorization.

66136233336651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7348470370745 (or 7348470370742 counting only the distinct ones).

The product of its digits is 18895680, while the sum is 54.

The spelling of 66136233336651 in words is "sixty-six trillion, one hundred thirty-six billion, two hundred thirty-three million, three hundred thirty-six thousand, six hundred fifty-one".