66765414313 has 16 divisors (see below), whose sum is σ = 72305565696. Its totient is φ = 61283280960.

The previous prime is 66765414293. The next prime is 66765414361. The reversal of 66765414313 is 31341456766.

It is a cyclic number.

It is not a de Polignac number, because 66765414313 - 2¹³ = 66765406121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66765414413) 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, 12345256 + ... + 12350662.

It is an arithmetic number, because the mean of its divisors is an integer number (4519097856).

Almost surely, 2^66765414313 is an apocalyptic number.

It is an amenable number.

66765414313 is a deficient number, since it is larger than the sum of its proper divisors (5540151383).

66765414313 is a wasteful number, since it uses less digits than its factorization.

66765414313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10584.

The product of its digits is 1088640, while the sum is 46.

The spelling of 66765414313 in words is "sixty-six billion, seven hundred sixty-five million, four hundred fourteen thousand, three hundred thirteen".