69639426713 has 4 divisors (see below), whose sum is σ = 69640603428. Its totient is φ = 69638250000.

The previous prime is 69639426673. The next prime is 69639426719. The reversal of 69639426713 is 31762493696.

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

It can be written as a sum of positive squares in 2 ways, for example, as 61450443664 + 8188983049 = 247892^2 + 90493^2 .

It is a cyclic number.

It is not a de Polignac number, because 69639426713 - 2¹² = 69639422617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69639426719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 494606 + ... + 619607.

It is an arithmetic number, because the mean of its divisors is an integer number (17410150857).

Almost surely, 2^69639426713 is an apocalyptic number.

It is an amenable number.

69639426713 is a deficient number, since it is larger than the sum of its proper divisors (1176715).

69639426713 is a wasteful number, since it uses less digits than its factorization.

69639426713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1176714.

The product of its digits is 8817984, while the sum is 56.

The spelling of 69639426713 in words is "sixty-nine billion, six hundred thirty-nine million, four hundred twenty-six thousand, seven hundred thirteen".