7117984378 has 4 divisors (see below), whose sum is σ = 10676976570. Its totient is φ = 3558992188.

The previous prime is 7117984333. The next prime is 7117984427. The reversal of 7117984378 is 8734897117.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6341414689 + 776569689 = 79633^2 + 27867^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1779496093 + ... + 1779496096.

Almost surely, 2^7117984378 is an apocalyptic number.

7117984378 is a deficient number, since it is larger than the sum of its proper divisors (3558992192).

7117984378 is a wasteful number, since it uses less digits than its factorization.

7117984378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3558992191.

The product of its digits is 2370816, while the sum is 55.

The square root of 7117984378 is about 84368.1478876952. The cubic root of 7117984378 is about 1923.6187879595.

The spelling of 7117984378 in words is "seven billion, one hundred seventeen million, nine hundred eighty-four thousand, three hundred seventy-eight".