70111607050721 has 4 divisors (see below), whose sum is σ = 70111821479700. Its totient is φ = 70111392621744.

The previous prime is 70111607050691. The next prime is 70111607050783. The reversal of 70111607050721 is 12705070611107.

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 22508989764496 + 47602617286225 = 4744364^2 + 6899465^2 .

It is a cyclic number.

It is not a de Polignac number, because 70111607050721 - 2⁶ = 70111607050657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70111607050421) 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, 106723286 + ... + 107378223.

It is an arithmetic number, because the mean of its divisors is an integer number (17527955369925).

Almost surely, 2^{70111607050721} is an apocalyptic number.

It is an amenable number.

70111607050721 is a deficient number, since it is larger than the sum of its proper divisors (214428979).

70111607050721 is a wasteful number, since it uses less digits than its factorization.

70111607050721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214428978.

The product of its (nonzero) digits is 20580, while the sum is 38.

Adding to 70111607050721 its reverse (12705070611107), we get a palindrome (82816677661828).

The spelling of 70111607050721 in words is "seventy trillion, one hundred eleven billion, six hundred seven million, fifty thousand, seven hundred twenty-one".