70122217636 has 9 divisors (see below), whose sum is σ = 122714807691. Its totient is φ = 35060844012.

The previous prime is 70122217603. The next prime is 70122217639. The reversal of 70122217636 is 63671222107.

It is a happy number.

The square root of 70122217636 is 264806.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70122217595 and 70122217604.

It is not an unprimeable number, because it can be changed into a prime (70122217639) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 463411 + ... + 595813.

Almost surely, 2^70122217636 is an apocalyptic number.

70122217636 is the 264806-th square number.

It is an amenable number.

70122217636 is a deficient number, since it is larger than the sum of its proper divisors (52592590055).

70122217636 is an frugal number, since it uses more digits than its factorization.

70122217636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264810 (or 132405 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The spelling of 70122217636 in words is "seventy billion, one hundred twenty-two million, two hundred seventeen thousand, six hundred thirty-six".