66710366741407 has 4 divisors (see below), whose sum is σ = 66710786877000. Its totient is φ = 66709946605816.

The previous prime is 66710366741387. The next prime is 66710366741413. The reversal of 66710366741407 is 70414766301766.

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 66710366741407 - 2⁴³ = 57914273719199 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 (66710366741477) 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, 209829532 + ... + 210147217.

It is an arithmetic number, because the mean of its divisors is an integer number (16677696719250).

Almost surely, 2^{66710366741407} is an apocalyptic number.

66710366741407 is a deficient number, since it is larger than the sum of its proper divisors (420135593).

66710366741407 is a wasteful number, since it uses less digits than its factorization.

66710366741407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420135592.

The product of its (nonzero) digits is 21337344, while the sum is 58.

The spelling of 66710366741407 in words is "sixty-six trillion, seven hundred ten billion, three hundred sixty-six million, seven hundred forty-one thousand, four hundred seven".