19523977966093 has 2 divisors, whose sum is σ = 19523977966094. Its totient is φ = 19523977966092.

The previous prime is 19523977965983. The next prime is 19523977966169. The reversal of 19523977966093 is 39066977932591.

It is an a-pointer prime, because the next prime (19523977966169) can be obtained adding 19523977966093 to its sum of digits (76).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19521533949124 + 2444016969 = 4418318^2 + 49437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19523977966093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19523977967093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9761988983046 + 9761988983047.

It is an arithmetic number, because the mean of its divisors is an integer number (9761988983047).

Almost surely, 2^{19523977966093} is an apocalyptic number.

It is an amenable number.

19523977966093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19523977966093 is an equidigital number, since it uses as much as digits as its factorization.

19523977966093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1041624360, while the sum is 76.

The spelling of 19523977966093 in words is "nineteen trillion, five hundred twenty-three billion, nine hundred seventy-seven million, nine hundred sixty-six thousand, ninety-three".