70111710721 has 8 divisors (see below), whose sum is σ = 76173105960. Its totient is φ = 64145770752.

The previous prime is 70111710719. The next prime is 70111710787. The reversal of 70111710721 is 12701711107.

It can be written as a sum of positive squares in 4 ways, for example, as 2179022400 + 67932688321 = 46680^2 + 260639^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70111710721 - 2¹ = 70111710719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70111710721.

It is not an unprimeable number, because it can be changed into a prime (70111710791) 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 7 ways as a sum of consecutive naturals, for example, 23862286 + ... + 23865223.

It is an arithmetic number, because the mean of its divisors is an integer number (9521638245).

Almost surely, 2^70111710721 is an apocalyptic number.

It is an amenable number.

70111710721 is a deficient number, since it is larger than the sum of its proper divisors (6061395239).

70111710721 is a wasteful number, since it uses less digits than its factorization.

70111710721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47727635.

The product of its (nonzero) digits is 686, while the sum is 28.

The spelling of 70111710721 in words is "seventy billion, one hundred eleven million, seven hundred ten thousand, seven hundred twenty-one".