70643789952 has 256 divisors, whose sum is σ = 211137062400. Its totient is φ = 20796162048.

The previous prime is 70643789939. The next prime is 70643789959. The reversal of 70643789952 is 25998734607.

It is not an unprimeable number, because it can be changed into a prime (70643789959) 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 31 ways as a sum of consecutive naturals, for example, 13268763 + ... + 13274085.

It is an arithmetic number, because the mean of its divisors is an integer number (824754150).

Almost surely, 2^70643789952 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 70643789952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105568531200).

70643789952 is an abundant number, since it is smaller than the sum of its proper divisors (140493272448).

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

70643789952 is a wasteful number, since it uses less digits than its factorization.

70643789952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5483 (or 5471 counting only the distinct ones).

The product of its (nonzero) digits is 22861440, while the sum is 60.

The spelling of 70643789952 in words is "seventy billion, six hundred forty-three million, seven hundred eighty-nine thousand, nine hundred fifty-two".