70971091216 has 15 divisors (see below), whose sum is σ = 137508553893. Its totient is φ = 35485012800.

The previous prime is 70971091211. The next prime is 70971091223. The reversal of 70971091216 is 61219017907.

The square root of 70971091216 is 266404.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 56455660816 + 14515430400 = 237604^2 + 120480^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70971091211) 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 2 ways as a sum of consecutive naturals, for example, 1032316 + ... + 1098916.

Almost surely, 2^70971091216 is an apocalyptic number.

70971091216 is the 266404-th square number.

It is an amenable number.

70971091216 is a deficient number, since it is larger than the sum of its proper divisors (66537462677).

70971091216 is an frugal number, since it uses more digits than its factorization.

70971091216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133210 (or 66603 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 43.

The spelling of 70971091216 in words is "seventy billion, nine hundred seventy-one million, ninety-one thousand, two hundred sixteen".