66704036703407 has 4 divisors (see below), whose sum is σ = 66816522432000. Its totient is φ = 66591550974816.

The previous prime is 66704036703391. The next prime is 66704036703413. The reversal of 66704036703407 is 70430763040766.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66704036703407 - 2⁴ = 66704036703391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66704036703467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56242863407 + ... + 56242864592.

It is an arithmetic number, because the mean of its divisors is an integer number (16704130608000).

Almost surely, 2^{66704036703407} is an apocalyptic number.

66704036703407 is a deficient number, since it is larger than the sum of its proper divisors (112485728593).

66704036703407 is a wasteful number, since it uses less digits than its factorization.

66704036703407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112485728592.

The product of its (nonzero) digits is 10668672, while the sum is 53.

The spelling of 66704036703407 in words is "sixty-six trillion, seven hundred four billion, thirty-six million, seven hundred three thousand, four hundred seven".