70518216212 has 24 divisors (see below), whose sum is σ = 129096714600. Its totient is φ = 33660763136.

The previous prime is 70518216211. The next prime is 70518216233. The reversal of 70518216212 is 21261281507.

It can be written as a sum of positive squares in 4 ways, for example, as 7835082256 + 62683133956 = 88516^2 + 250366^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70518216211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3404933 + ... + 3425580.

It is an arithmetic number, because the mean of its divisors is an integer number (5379029775).

Almost surely, 2^70518216212 is an apocalyptic number.

It is an amenable number.

70518216212 is a deficient number, since it is larger than the sum of its proper divisors (58578498388).

70518216212 is a wasteful number, since it uses less digits than its factorization.

70518216212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6830635 (or 6830633 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

Adding to 70518216212 its reverse (21261281507), we get a palindrome (91779497719).

The spelling of 70518216212 in words is "seventy billion, five hundred eighteen million, two hundred sixteen thousand, two hundred twelve".