70640228736 has 512 divisors, whose sum is σ = 268347801600. Its totient is φ = 17754163200.

The previous prime is 70640228713. The next prime is 70640228773. The reversal of 70640228736 is 63782204607.

It is a junction number, because it is equal to n+sod(n) for n = 70640228691 and 70640228700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8245191 + ... + 8253753.

It is an arithmetic number, because the mean of its divisors is an integer number (524116800).

Almost surely, 2^70640228736 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 70640228736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134173900800).

70640228736 is an abundant number, since it is smaller than the sum of its proper divisors (197707572864).

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

70640228736 is a wasteful number, since it uses less digits than its factorization.

70640228736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8635 (or 8617 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 45.

The spelling of 70640228736 in words is "seventy billion, six hundred forty million, two hundred twenty-eight thousand, seven hundred thirty-six".