19641246240001 has 8 divisors (see below), whose sum is σ = 20174887636904. Its totient is φ = 19107752048640.

The previous prime is 19641246239999. The next prime is 19641246240053. The reversal of 19641246240001 is 10004264214691.

It can be written as a sum of positive squares in 4 ways, for example, as 4792053733776 + 14849192506225 = 2189076^2 + 3853465^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 19641246240001 - 2¹ = 19641246239999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19641246240701) 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, 36530880 + ... + 37064641.

It is an arithmetic number, because the mean of its divisors is an integer number (2521860954613).

Almost surely, 2^{19641246240001} is an apocalyptic number.

It is an amenable number.

19641246240001 is a deficient number, since it is larger than the sum of its proper divisors (533641396903).

19641246240001 is an equidigital number, since it uses as much as digits as its factorization.

19641246240001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73602771.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 19641246240001 in words is "nineteen trillion, six hundred forty-one billion, two hundred forty-six million, two hundred forty thousand, one".