7119478081 has 4 divisors (see below), whose sum is σ = 7217005252. Its totient is φ = 7021950912.

The previous prime is 7119478061. The next prime is 7119478097. The reversal of 7119478081 is 1808749117.

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 2 ways, for example, as 2479143681 + 4640334400 = 49791^2 + 68120^2 .

It is a cyclic number.

It is not a de Polignac number, because 7119478081 - 2²⁹ = 6582607169 is a prime.

It is a super-2 number, since 2×7119478081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7119478001) 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, 48763476 + ... + 48763621.

It is an arithmetic number, because the mean of its divisors is an integer number (1804251313).

Almost surely, 2^7119478081 is an apocalyptic number.

It is an amenable number.

7119478081 is a deficient number, since it is larger than the sum of its proper divisors (97527171).

7119478081 is an equidigital number, since it uses as much as digits as its factorization.

7119478081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97527170.

The product of its (nonzero) digits is 112896, while the sum is 46.

The square root of 7119478081 is about 84376.9997155623. Note that the first 3 decimals coincide. The cubic root of 7119478081 is about 1923.7533351402.

The spelling of 7119478081 in words is "seven billion, one hundred nineteen million, four hundred seventy-eight thousand, eighty-one".