66737403670071 has 16 divisors (see below), whose sum is σ = 89980480890720. Its totient is φ = 43994104195200.

The previous prime is 66737403670051. The next prime is 66737403670123. The reversal of 66737403670071 is 17007630473766.

It is not a de Polignac number, because 66737403670071 - 2¹⁷ = 66737403538999 is a prime.

It is a super-2 number, since 2×66737403670071² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 66737403669993 and 66737403670020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66737403670051) 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, 142233736 + ... + 142702173.

It is an arithmetic number, because the mean of its divisors is an integer number (5623780055670).

Almost surely, 2^{66737403670071} is an apocalyptic number.

66737403670071 is a deficient number, since it is larger than the sum of its proper divisors (23243077220649).

66737403670071 is a wasteful number, since it uses less digits than its factorization.

66737403670071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284936786.

The product of its (nonzero) digits is 18670176, while the sum is 57.

The spelling of 66737403670071 in words is "sixty-six trillion, seven hundred thirty-seven billion, four hundred three million, six hundred seventy thousand, seventy-one".