19948006326979 has 4 divisors (see below), whose sum is σ = 20997901396840. Its totient is φ = 18898111257120.

The previous prime is 19948006326971. The next prime is 19948006327009. The reversal of 19948006326979 is 97962360084991.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19948006326979 - 2³ = 19948006326971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19948006326971) 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 in 3 ways as a sum of consecutive naturals, for example, 524947534902 + ... + 524947534939.

It is an arithmetic number, because the mean of its divisors is an integer number (5249475349210).

Almost surely, 2^{19948006326979} is an apocalyptic number.

19948006326979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

19948006326979 is a deficient number, since it is larger than the sum of its proper divisors (1049895069861).

19948006326979 is a wasteful number, since it uses less digits than its factorization.

19948006326979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1049895069860.

The product of its (nonzero) digits is 317447424, while the sum is 73.

The spelling of 19948006326979 in words is "nineteen trillion, nine hundred forty-eight billion, six million, three hundred twenty-six thousand, nine hundred seventy-nine".