7040661799 has 4 divisors (see below), whose sum is σ = 7050037600. Its totient is φ = 7031286000.

The previous prime is 7040661787. The next prime is 7040661811. The reversal of 7040661799 is 9971660407.

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

It is an interprime number because it is at equal distance from previous prime (7040661787) and next prime (7040661811).

It is a cyclic number.

It is not a de Polignac number, because 7040661799 - 2²¹ = 7038564647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7040665799) 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, 4686774 + ... + 4688275.

It is an arithmetic number, because the mean of its divisors is an integer number (1762509400).

Almost surely, 2^7040661799 is an apocalyptic number.

7040661799 is a deficient number, since it is larger than the sum of its proper divisors (9375801).

7040661799 is an equidigital number, since it uses as much as digits as its factorization.

7040661799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9375800.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 7040661799 is about 83908.6515146084. The cubic root of 7040661799 is about 1916.6279969447.

The spelling of 7040661799 in words is "seven billion, forty million, six hundred sixty-one thousand, seven hundred ninety-nine".