70118221817 has 4 divisors (see below), whose sum is σ = 80135110656. Its totient is φ = 60101332980.

The previous prime is 70118221807. The next prime is 70118221837. The reversal of 70118221817 is 71812281107.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70118221817 - 2²⁸ = 69849786361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70118221807) 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, 5008444409 + ... + 5008444422.

It is an arithmetic number, because the mean of its divisors is an integer number (20033777664).

Almost surely, 2^70118221817 is an apocalyptic number.

It is an amenable number.

70118221817 is a deficient number, since it is larger than the sum of its proper divisors (10016888839).

70118221817 is a wasteful number, since it uses less digits than its factorization.

70118221817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10016888838.

The product of its (nonzero) digits is 12544, while the sum is 38.

The spelling of 70118221817 in words is "seventy billion, one hundred eighteen million, two hundred twenty-one thousand, eight hundred seventeen".