7040927791991 has 4 divisors (see below), whose sum is σ = 7040962096800. Its totient is φ = 7040893487184.

The previous prime is 7040927791979. The next prime is 7040927792021. The reversal of 7040927791991 is 1991977290407.

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 7040927791991 - 2³⁸ = 6766049885047 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 (7040927790991) 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, 16842671 + ... + 17255648.

It is an arithmetic number, because the mean of its divisors is an integer number (1760240524200).

Almost surely, 2^{7040927791991} is an apocalyptic number.

7040927791991 is a deficient number, since it is larger than the sum of its proper divisors (34304809).

7040927791991 is a wasteful number, since it uses less digits than its factorization.

7040927791991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34304808.

The product of its (nonzero) digits is 18003384, while the sum is 65.

The spelling of 7040927791991 in words is "seven trillion, forty billion, nine hundred twenty-seven million, seven hundred ninety-one thousand, nine hundred ninety-one".