7109388772 has 12 divisors (see below), whose sum is σ = 12469142700. Its totient is φ = 3546776576.

The previous prime is 7109388761. The next prime is 7109388779. The reversal of 7109388772 is 2778839017.

It can be written as a sum of positive squares in 2 ways, for example, as 5971271076 + 1138117696 = 77274^2 + 33736^2 .

It is a super-2 number, since 2×7109388772² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7109388779) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1977433 + ... + 1981024.

It is an arithmetic number, because the mean of its divisors is an integer number (1039095225).

Almost surely, 2^7109388772 is an apocalyptic number.

It is an amenable number.

7109388772 is a deficient number, since it is larger than the sum of its proper divisors (5359753928).

7109388772 is a wasteful number, since it uses less digits than its factorization.

7109388772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3958910 (or 3958908 counting only the distinct ones).

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 7109388772 is about 84317.1914380454. The cubic root of 7109388772 is about 1922.8441618629.

The spelling of 7109388772 in words is "seven billion, one hundred nine million, three hundred eighty-eight thousand, seven hundred seventy-two".