66700370740338 has 32 divisors (see below), whose sum is σ = 151670093678400. Its totient is φ = 21716399775168.

The previous prime is 66700370740337. The next prime is 66700370740453. The reversal of 66700370740338 is 83304707300766.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (66700370740331) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14362695943 + ... + 14362700586.

It is an arithmetic number, because the mean of its divisors is an integer number (4739690427450).

Almost surely, 2^{66700370740338} is an apocalyptic number.

66700370740338 is an abundant number, since it is smaller than the sum of its proper divisors (84969722938062).

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

66700370740338 is a wasteful number, since it uses less digits than its factorization.

66700370740338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28725396583 (or 28725396577 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 54.

The spelling of 66700370740338 in words is "sixty-six trillion, seven hundred billion, three hundred seventy million, seven hundred forty thousand, three hundred thirty-eight".