19827499737113 has 2 divisors, whose sum is σ = 19827499737114. Its totient is φ = 19827499737112.

The previous prime is 19827499737091. The next prime is 19827499737179. The reversal of 19827499737113 is 31173799472891.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18479225770009 + 1348273967104 = 4298747^2 + 1161152^2 .

It is a cyclic number.

It is not a de Polignac number, because 19827499737113 - 2¹⁰ = 19827499736089 is a prime.

It is not a weakly prime, because it can be changed into another prime (19827499737313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9913749868556 + 9913749868557.

It is an arithmetic number, because the mean of its divisors is an integer number (9913749868557).

Almost surely, 2^{19827499737113} is an apocalyptic number.

It is an amenable number.

19827499737113 is a deficient number, since it is larger than the sum of its proper divisors (1).

19827499737113 is an equidigital number, since it uses as much as digits as its factorization.

19827499737113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144027072, while the sum is 71.

The spelling of 19827499737113 in words is "nineteen trillion, eight hundred twenty-seven billion, four hundred ninety-nine million, seven hundred thirty-seven thousand, one hundred thirteen".