7078111649 has 4 divisors (see below), whose sum is σ = 8089270464. Its totient is φ = 6066952836.

The previous prime is 7078111643. The next prime is 7078111657. The reversal of 7078111649 is 9461118707.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9461118707 = 37 ⋅255705911.

It is not a de Polignac number, because 7078111649 - 2²⁴ = 7061334433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7078111643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505579397 + ... + 505579410.

It is an arithmetic number, because the mean of its divisors is an integer number (2022317616).

Almost surely, 2^7078111649 is an apocalyptic number.

It is an amenable number.

7078111649 is a deficient number, since it is larger than the sum of its proper divisors (1011158815).

7078111649 is a wasteful number, since it uses less digits than its factorization.

7078111649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1011158814.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 7078111649 is about 84131.5140063460. The cubic root of 7078111649 is about 1920.0202226783.

The spelling of 7078111649 in words is "seven billion, seventy-eight million, one hundred eleven thousand, six hundred forty-nine".