66153534064 has 40 divisors (see below), whose sum is σ = 131320679760. Its totient is φ = 32271303168.

The previous prime is 66153534043. The next prime is 66153534077. The reversal of 66153534064 is 46043535166.

It is a self number, because there is not a number n which added to its sum of digits gives 66153534064.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66117 + ... + 369700.

It is an arithmetic number, because the mean of its divisors is an integer number (3283016994).

Almost surely, 2^66153534064 is an apocalyptic number.

It is an amenable number.

66153534064 is a deficient number, since it is larger than the sum of its proper divisors (65167145696).

66153534064 is a wasteful number, since it uses less digits than its factorization.

66153534064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436057 (or 436051 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 66153534064 in words is "sixty-six billion, one hundred fifty-three million, five hundred thirty-four thousand, sixty-four".