66736707073988 has 48 divisors (see below), whose sum is σ = 145343100739200. Its totient is φ = 26161758120960.

The previous prime is 66736707073963. The next prime is 66736707074047. The reversal of 66736707073988 is 88937070763766.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2162828333 + ... + 2162859188.

It is an arithmetic number, because the mean of its divisors is an integer number (3027981265400).

Almost surely, 2^{66736707073988} is an apocalyptic number.

It is an amenable number.

66736707073988 is an abundant number, since it is smaller than the sum of its proper divisors (78606393665212).

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

66736707073988 is a wasteful number, since it uses less digits than its factorization.

66736707073988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325687580 (or 4325687578 counting only the distinct ones).

The product of its (nonzero) digits is 2688505344, while the sum is 77.

The spelling of 66736707073988 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred seven million, seventy-three thousand, nine hundred eighty-eight".