7117426816 has 64 divisors (see below), whose sum is σ = 14799720600. Its totient is φ = 3406274560.

The previous prime is 7117426807. The next prime is 7117426831. The reversal of 7117426816 is 6186247117.

It can be written as a sum of positive squares in 4 ways, for example, as 6393601600 + 723825216 = 79960^2 + 26904^2 .

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×7117426816² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265350 + ... + 290938.

Almost surely, 2^7117426816 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 7117426816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7399860300).

7117426816 is an abundant number, since it is smaller than the sum of its proper divisors (7682293784).

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

7117426816 is a wasteful number, since it uses less digits than its factorization.

7117426816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25697 (or 25685 counting only the distinct ones).

The product of its digits is 112896, while the sum is 43.

The square root of 7117426816 is about 84364.8434835270. The cubic root of 7117426816 is about 1923.5685600351.

The spelling of 7117426816 in words is "seven billion, one hundred seventeen million, four hundred twenty-six thousand, eight hundred sixteen".