66736703666670 has 64 divisors (see below), whose sum is σ = 162433307128320. Its totient is φ = 17544792182400.

The previous prime is 66736703666657. The next prime is 66736703666693. The reversal of 66736703666670 is 7666630763766.

It is a junction number, because it is equal to n+sod(n) for n = 66736703666595 and 66736703666604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36556461 + ... + 38338599.

It is an arithmetic number, because the mean of its divisors is an integer number (2538020423880).

Almost surely, 2^{66736703666670} is an apocalyptic number.

66736703666670 is an abundant number, since it is smaller than the sum of its proper divisors (95696603461650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66736703666670 is a wasteful number, since it uses less digits than its factorization.

66736703666670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1799801.

The product of its (nonzero) digits is 864162432, while the sum is 69.

The spelling of 66736703666670 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred three million, six hundred sixty-six thousand, six hundred seventy".