70671688705 has 4 divisors (see below), whose sum is σ = 84806026452. Its totient is φ = 56537350960.

The previous prime is 70671688699. The next prime is 70671688721. The reversal of 70671688705 is 50788617607.

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 35025871104 + 35645817601 = 187152^2 + 188801^2 .

It is a de Polignac number, because none of the positive numbers 2^k-70671688705 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7067168866 + ... + 7067168875.

It is an arithmetic number, because the mean of its divisors is an integer number (21201506613).

Almost surely, 2^70671688705 is an apocalyptic number.

It is an amenable number.

70671688705 is a deficient number, since it is larger than the sum of its proper divisors (14134337747).

70671688705 is a wasteful number, since it uses less digits than its factorization.

70671688705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14134337746.

The product of its (nonzero) digits is 3951360, while the sum is 55.

The spelling of 70671688705 in words is "seventy billion, six hundred seventy-one million, six hundred eighty-eight thousand, seven hundred five".