19291020000001 has 16 divisors (see below), whose sum is σ = 20471305087440. Its totient is φ = 18115795814400.

The previous prime is 19291019999989. The next prime is 19291020000041. The reversal of 19291020000001 is 10000002019291.

It can be written as a sum of positive squares in 8 ways, for example, as 4966301390400 + 14324718609601 = 2228520^2 + 3784801^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19291020000001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19291020000041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 359685655 + ... + 359739283.

It is an arithmetic number, because the mean of its divisors is an integer number (1279456567965).

Almost surely, 2^{19291020000001} is an apocalyptic number.

It is an amenable number.

19291020000001 is a deficient number, since it is larger than the sum of its proper divisors (1180285087439).

19291020000001 is a wasteful number, since it uses less digits than its factorization.

19291020000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100404.

The product of its (nonzero) digits is 324, while the sum is 25.

Adding to 19291020000001 its reverse (10000002019291), we get a palindrome (29291022019292).

The spelling of 19291020000001 in words is "nineteen trillion, two hundred ninety-one billion, twenty million, one", and thus it is an aban number.