19047640000001 has 8 divisors (see below), whose sum is σ = 19129632471144. Its totient is φ = 18965649605760.

The previous prime is 19047639999979. The next prime is 19047640000009. The reversal of 19047640000001 is 10000004674091.

It can be written as a sum of positive squares in 4 ways, for example, as 1496768730625 + 17550871269376 = 1223425^2 + 4189376^2 .

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-19047640000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19047640000009) 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, 19523831 + ... + 20476211.

It is an arithmetic number, because the mean of its divisors is an integer number (2391204058893).

Almost surely, 2^{19047640000001} is an apocalyptic number.

It is an amenable number.

19047640000001 is a deficient number, since it is larger than the sum of its proper divisors (81992471143).

19047640000001 is an equidigital number, since it uses as much as digits as its factorization.

19047640000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1038451.

The product of its (nonzero) digits is 6048, while the sum is 32.

Adding to 19047640000001 its reverse (10000004674091), we get a palindrome (29047644674092).

The spelling of 19047640000001 in words is "nineteen trillion, forty-seven billion, six hundred forty million, one", and thus it is an aban number.