70111710521161 has 4 divisors (see below), whose sum is σ = 70754937223300. Its totient is φ = 69468483819024.

The previous prime is 70111710521093. The next prime is 70111710521183. The reversal of 70111710521161 is 16112501711107.

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 31573936426761 + 38537774094400 = 5619069^2 + 6207880^2 .

It is a cyclic number.

It is not a de Polignac number, because 70111710521161 - 2²⁹ = 70111173650249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70111710521191) 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, 321613350906 + ... + 321613351123.

It is an arithmetic number, because the mean of its divisors is an integer number (17688734305825).

Almost surely, 2^{70111710521161} is an apocalyptic number.

It is an amenable number.

70111710521161 is a deficient number, since it is larger than the sum of its proper divisors (643226702139).

70111710521161 is a wasteful number, since it uses less digits than its factorization.

70111710521161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 643226702138.

The product of its (nonzero) digits is 2940, while the sum is 34.

The spelling of 70111710521161 in words is "seventy trillion, one hundred eleven billion, seven hundred ten million, five hundred twenty-one thousand, one hundred sixty-one".