66736710806670 has 48 divisors (see below), whose sum is σ = 173515912184160. Its totient is φ = 17796408616512.

The previous prime is 66736710806639. The next prime is 66736710806683. The reversal of 66736710806670 is 7660801763766.

66736710806670 is a `hidden beast` number, since 6 + 67 + 367 + 10 + 80 + 66 + 70 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 66736710806598 and 66736710806607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44247412 + ... + 45730808.

It is an arithmetic number, because the mean of its divisors is an integer number (3614914837170).

Almost surely, 2^{66736710806670} is an apocalyptic number.

66736710806670 is an abundant number, since it is smaller than the sum of its proper divisors (106779201377490).

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

66736710806670 is a wasteful number, since it uses less digits than its factorization.

66736710806670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1983289 (or 1983286 counting only the distinct ones).

The product of its (nonzero) digits is 64012032, while the sum is 63.

The spelling of 66736710806670 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred ten million, eight hundred six thousand, six hundred seventy".