19372128667 has 2 divisors, whose sum is σ = 19372128668. Its totient is φ = 19372128666.

The previous prime is 19372128653. The next prime is 19372128707. The reversal of 19372128667 is 76682127391.

It is a weak prime.

It is an emirp because it is prime and its reverse (76682127391) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19372128667 is a prime.

It is not a weakly prime, because it can be changed into another prime (19372128767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9686064333 + 9686064334.

It is an arithmetic number, because the mean of its divisors is an integer number (9686064334).

Almost surely, 2^19372128667 is an apocalyptic number.

19372128667 is a deficient number, since it is larger than the sum of its proper divisors (1).

19372128667 is an equidigital number, since it uses as much as digits as its factorization.

19372128667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1524096, while the sum is 52.

The spelling of 19372128667 in words is "nineteen billion, three hundred seventy-two million, one hundred twenty-eight thousand, six hundred sixty-seven".