66151808835 has 48 divisors (see below), whose sum is σ = 124606895616. Its totient is φ = 29876452032.

The previous prime is 66151808819. The next prime is 66151808881. The reversal of 66151808835 is 53880815166.

It is not a de Polignac number, because 66151808835 - 2⁴ = 66151808819 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 481179 + ... + 603188.

It is an arithmetic number, because the mean of its divisors is an integer number (2595976992).

Almost surely, 2^66151808835 is an apocalyptic number.

66151808835 is a deficient number, since it is larger than the sum of its proper divisors (58455086781).

66151808835 is a wasteful number, since it uses less digits than its factorization.

66151808835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1084472 (or 1084465 counting only the distinct ones).

The product of its (nonzero) digits is 1382400, while the sum is 51.

The spelling of 66151808835 in words is "sixty-six billion, one hundred fifty-one million, eight hundred eight thousand, eight hundred thirty-five".