70689409056 has 288 divisors, whose sum is σ = 232705968768. Its totient is φ = 19938078720.

The previous prime is 70689409051. The next prime is 70689409057. The reversal of 70689409056 is 65090498607.

It is a tau number, because it is divible by the number of its divisors (288).

It is a super-2 number, since 2×70689409056² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70689408993 and 70689409011.

It is not an unprimeable number, because it can be changed into a prime (70689409051) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58275906 + ... + 58277118.

It is an arithmetic number, because the mean of its divisors is an integer number (808006836).

Almost surely, 2^70689409056 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70689409056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116352984384).

70689409056 is an abundant number, since it is smaller than the sum of its proper divisors (162016559712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70689409056 is a wasteful number, since it uses less digits than its factorization.

70689409056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584 (or 1573 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The spelling of 70689409056 in words is "seventy billion, six hundred eighty-nine million, four hundred nine thousand, fifty-six".