19712948105 has 8 divisors (see below), whose sum is σ = 23979586632. Its totient is φ = 15554325888.

The previous prime is 19712948083. The next prime is 19712948107. The reversal of 19712948105 is 50184921791.

It can be written as a sum of positive squares in 4 ways, for example, as 6164919289 + 13548028816 = 78517^2 + 116396^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19712948105 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19712948105.

It is not an unprimeable number, because it can be changed into a prime (19712948107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27003674 + ... + 27004403.

It is an arithmetic number, because the mean of its divisors is an integer number (2997448329).

Almost surely, 2^19712948105 is an apocalyptic number.

It is an amenable number.

19712948105 is a deficient number, since it is larger than the sum of its proper divisors (4266638527).

19712948105 is an equidigital number, since it uses as much as digits as its factorization.

19712948105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54008155.

The product of its (nonzero) digits is 181440, while the sum is 47.

The spelling of 19712948105 in words is "nineteen billion, seven hundred twelve million, nine hundred forty-eight thousand, one hundred five".