19523977967093 has 2 divisors, whose sum is σ = 19523977967094. Its totient is φ = 19523977967092.

The previous prime is 19523977967047. The next prime is 19523977967147. The reversal of 19523977967093 is 39076977932591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19180134117169 + 343843849924 = 4379513^2 + 586382^2 .

It is a cyclic number.

It is not a de Polignac number, because 19523977967093 - 2²² = 19523973772789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19523977967033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9761988983546 + 9761988983547.

It is an arithmetic number, because the mean of its divisors is an integer number (9761988983547).

Almost surely, 2^{19523977967093} is an apocalyptic number.

It is an amenable number.

19523977967093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19523977967093 is an equidigital number, since it uses as much as digits as its factorization.

19523977967093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1215228420, while the sum is 77.

The spelling of 19523977967093 in words is "nineteen trillion, five hundred twenty-three billion, nine hundred seventy-seven million, nine hundred sixty-seven thousand, ninety-three".