19497245884807 has 2 divisors, whose sum is σ = 19497245884808. Its totient is φ = 19497245884806.

The previous prime is 19497245884793. The next prime is 19497245884847. The reversal of 19497245884807 is 70848854279491.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19497245884807 - 2²³ = 19497237496199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19497245884847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9748622942403 + 9748622942404.

It is an arithmetic number, because the mean of its divisors is an integer number (9748622942404).

Almost surely, 2^{19497245884807} is an apocalyptic number.

19497245884807 is a deficient number, since it is larger than the sum of its proper divisors (1).

19497245884807 is an equidigital number, since it uses as much as digits as its factorization.

19497245884807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1300561920, while the sum is 76.

The spelling of 19497245884807 in words is "nineteen trillion, four hundred ninety-seven billion, two hundred forty-five million, eight hundred eighty-four thousand, eight hundred seven".