66000070713 has 4 divisors (see below), whose sum is σ = 88000094288. Its totient is φ = 44000047140.

The previous prime is 66000070699. The next prime is 66000070769. The reversal of 66000070713 is 31707000066.

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 not a de Polignac number, because 66000070713 - 2¹⁸ = 65999808569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66000050713) 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, 11000011783 + ... + 11000011788.

It is an arithmetic number, because the mean of its divisors is an integer number (22000023572).

Almost surely, 2^66000070713 is an apocalyptic number.

It is an amenable number.

66000070713 is a deficient number, since it is larger than the sum of its proper divisors (22000023575).

66000070713 is a wasteful number, since it uses less digits than its factorization.

66000070713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22000023574.

The product of its (nonzero) digits is 5292, while the sum is 30.

Adding to 66000070713 its reverse (31707000066), we get a palindrome (97707070779).

The spelling of 66000070713 in words is "sixty-six billion, seventy thousand, seven hundred thirteen".