70321388556 has 72 divisors (see below), whose sum is σ = 177592156560. Its totient is φ = 21645298688.

The previous prime is 70321388537. The next prime is 70321388563. The reversal of 70321388556 is 65588312307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7491 + ... + 375098.

It is an arithmetic number, because the mean of its divisors is an integer number (2466557730).

Almost surely, 2^70321388556 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 70321388556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88796078280).

70321388556 is an abundant number, since it is smaller than the sum of its proper divisors (107270768004).

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

70321388556 is a wasteful number, since it uses less digits than its factorization.

70321388556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382683 (or 382664 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 70321388556 in words is "seventy billion, three hundred twenty-one million, three hundred eighty-eight thousand, five hundred fifty-six".