7081771312 has 80 divisors (see below), whose sum is σ = 17121975552. Its totient is φ = 2756655360.

The previous prime is 7081771309. The next prime is 7081771337. The reversal of 7081771312 is 2131771807.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2002698 + ... + 2006230.

Almost surely, 2^7081771312 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 7081771312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8560987776).

7081771312 is an abundant number, since it is smaller than the sum of its proper divisors (10040204240).

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

7081771312 is a wasteful number, since it uses less digits than its factorization.

7081771312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5186 (or 5180 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 37.

The square root of 7081771312 is about 84153.2608518529. The cubic root of 7081771312 is about 1920.3510744012.

It can be divided in two parts, 70817 and 71312, that added together give a square (142129 = 377²).

The spelling of 7081771312 in words is "seven billion, eighty-one million, seven hundred seventy-one thousand, three hundred twelve".