19279020011 has 2 divisors, whose sum is σ = 19279020012. Its totient is φ = 19279020010.

The previous prime is 19279019971. The next prime is 19279020071. The reversal of 19279020011 is 11002097291.

It is a weak prime.

It is an emirp because it is prime and its reverse (11002097291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19279020011 - 2²² = 19274825707 is a prime.

It is a super-2 number, since 2×19279020011² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 19279020011.

It is not a weakly prime, because it can be changed into another prime (19279020071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9639510005 + 9639510006.

It is an arithmetic number, because the mean of its divisors is an integer number (9639510006).

Almost surely, 2^19279020011 is an apocalyptic number.

19279020011 is a deficient number, since it is larger than the sum of its proper divisors (1).

19279020011 is an equidigital number, since it uses as much as digits as its factorization.

19279020011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 32.

The spelling of 19279020011 in words is "nineteen billion, two hundred seventy-nine million, twenty thousand, eleven".