7991020027 has 2 divisors, whose sum is σ = 7991020028. Its totient is φ = 7991020026.

The previous prime is 7991020013. The next prime is 7991020049. The reversal of 7991020027 is 7200201997.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7991020027 - 2⁷ = 7991019899 is a prime.

It is a super-3 number, since 3×7991020027³ (a number of 31 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (7991020727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3995510013 + 3995510014.

It is an arithmetic number, because the mean of its divisors is an integer number (3995510014).

Almost surely, 2^7991020027 is an apocalyptic number.

7991020027 is a deficient number, since it is larger than the sum of its proper divisors (1).

7991020027 is an equidigital number, since it uses as much as digits as its factorization.

7991020027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 7991020027 is about 89392.5054297059. The cubic root of 7991020027 is about 1999.2513887422.

The spelling of 7991020027 in words is "seven billion, nine hundred ninety-one million, twenty thousand, twenty-seven".