66571103336 has 8 divisors (see below), whose sum is σ = 124820818770. Its totient is φ = 33285551664.

The previous prime is 66571103317. The next prime is 66571103359. The reversal of 66571103336 is 63330117566.

It can be written as a sum of positive squares in only one way, i.e., 66569160100 + 1943236 = 258010^2 + 1394^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 66571103293 and 66571103302.

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 as a sum of consecutive naturals, namely, 4160693951 + ... + 4160693966.

Almost surely, 2^66571103336 is an apocalyptic number.

It is an amenable number.

66571103336 is a deficient number, since it is larger than the sum of its proper divisors (58249715434).

66571103336 is a wasteful number, since it uses less digits than its factorization.

66571103336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8321387923 (or 8321387919 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 41.

The spelling of 66571103336 in words is "sixty-six billion, five hundred seventy-one million, one hundred three thousand, three hundred thirty-six".