19659155027 has 2 divisors, whose sum is σ = 19659155028. Its totient is φ = 19659155026.

The previous prime is 19659155023. The next prime is 19659155041. The reversal of 19659155027 is 72055195691.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19659155027 - 2² = 19659155023 is a prime.

It is not a weakly prime, because it can be changed into another prime (19659155023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9829577513 + 9829577514.

It is an arithmetic number, because the mean of its divisors is an integer number (9829577514).

Almost surely, 2^19659155027 is an apocalyptic number.

19659155027 is a deficient number, since it is larger than the sum of its proper divisors (1).

19659155027 is an equidigital number, since it uses as much as digits as its factorization.

19659155027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 850500, while the sum is 50.

The spelling of 19659155027 in words is "nineteen billion, six hundred fifty-nine million, one hundred fifty-five thousand, twenty-seven".