66279129313 has 4 divisors (see below), whose sum is σ = 69767504560. Its totient is φ = 62790754068.

The previous prime is 66279129311. The next prime is 66279129337. The reversal of 66279129313 is 31392197266.

66279129313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66279129313 - 2¹ = 66279129311 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66279129311) 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, 1744187595 + ... + 1744187632.

It is an arithmetic number, because the mean of its divisors is an integer number (17441876140).

Almost surely, 2^66279129313 is an apocalyptic number.

It is an amenable number.

66279129313 is a deficient number, since it is larger than the sum of its proper divisors (3488375247).

66279129313 is a wasteful number, since it uses less digits than its factorization.

66279129313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3488375246.

The product of its digits is 734832, while the sum is 49.

The spelling of 66279129313 in words is "sixty-six billion, two hundred seventy-nine million, one hundred twenty-nine thousand, three hundred thirteen".