70441318081 has 4 divisors (see below), whose sum is σ = 70450607700. Its totient is φ = 70432028464.

The previous prime is 70441318063. The next prime is 70441318117. The reversal of 70441318081 is 18081314407.

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 27625431681 + 42815886400 = 166209^2 + 206920^2 .

It is a cyclic number.

It is not a de Polignac number, because 70441318081 - 2²⁹ = 69904447169 is a prime.

It is a super-2 number, since 2×70441318081² (a number of 22 digits) contains 22 as substring.

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 70441318081.

It is not an unprimeable number, because it can be changed into a prime (70441318021) 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, 4633426 + ... + 4648603.

It is an arithmetic number, because the mean of its divisors is an integer number (17612651925).

Almost surely, 2^70441318081 is an apocalyptic number.

It is an amenable number.

70441318081 is a deficient number, since it is larger than the sum of its proper divisors (9289619).

70441318081 is an equidigital number, since it uses as much as digits as its factorization.

70441318081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9289618.

The product of its (nonzero) digits is 21504, while the sum is 37.

The spelling of 70441318081 in words is "seventy billion, four hundred forty-one million, three hundred eighteen thousand, eighty-one".