7997011007 has 4 divisors (see below), whose sum is σ = 8254979136. Its totient is φ = 7739042880.

The previous prime is 7997011003. The next prime is 7997011039. The reversal of 7997011007 is 7001107997.

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

It is a cyclic number.

It is not a de Polignac number, because 7997011007 - 2² = 7997011003 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 (7997011003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128984018 + ... + 128984079.

It is an arithmetic number, because the mean of its divisors is an integer number (2063744784).

Almost surely, 2^7997011007 is an apocalyptic number.

7997011007 is a deficient number, since it is larger than the sum of its proper divisors (257968129).

7997011007 is a wasteful number, since it uses less digits than its factorization.

7997011007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257968128.

The product of its (nonzero) digits is 27783, while the sum is 41.

The square root of 7997011007 is about 89426.0085601499. The cubic root of 7997011007 is about 1999.7508862225.

The spelling of 7997011007 in words is "seven billion, nine hundred ninety-seven million, eleven thousand, seven".