19740672011 has 2 divisors, whose sum is σ = 19740672012. Its totient is φ = 19740672010.

The previous prime is 19740671987. The next prime is 19740672013. The reversal of 19740672011 is 11027604791.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19740672011 - 2¹⁰ = 19740670987 is a prime.

Together with 19740672013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19740672013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9870336005 + 9870336006.

It is an arithmetic number, because the mean of its divisors is an integer number (9870336006).

Almost surely, 2^19740672011 is an apocalyptic number.

19740672011 is a deficient number, since it is larger than the sum of its proper divisors (1).

19740672011 is an equidigital number, since it uses as much as digits as its factorization.

19740672011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 38.

The spelling of 19740672011 in words is "nineteen billion, seven hundred forty million, six hundred seventy-two thousand, eleven".