66740748016 has 40 divisors (see below), whose sum is σ = 133820899200. Its totient is φ = 32207212800.

The previous prime is 66740748007. The next prime is 66740748047. The reversal of 66740748016 is 61084704766.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235166 + ... + 1288066.

It is an arithmetic number, because the mean of its divisors is an integer number (3345522480).

Almost surely, 2^66740748016 is an apocalyptic number.

It is an amenable number.

66740748016 is an abundant number, since it is smaller than the sum of its proper divisors (67080151184).

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

66740748016 is a wasteful number, since it uses less digits than its factorization.

66740748016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55657 (or 55651 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 66740748016 in words is "sixty-six billion, seven hundred forty million, seven hundred forty-eight thousand, sixteen".