197719596553 has 2 divisors, whose sum is σ = 197719596554. Its totient is φ = 197719596552.

The previous prime is 197719596461. The next prime is 197719596587. The reversal of 197719596553 is 355695917791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176003742784 + 21715853769 = 419528^2 + 147363^2 .

It is an emirp because it is prime and its reverse (355695917791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 197719596553 - 2¹³ = 197719588361 is a prime.

It is a super-2 number, since 2×197719596553² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (197719596353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98859798276 + 98859798277.

It is an arithmetic number, because the mean of its divisors is an integer number (98859798277).

Almost surely, 2^197719596553 is an apocalyptic number.

It is an amenable number.

197719596553 is a deficient number, since it is larger than the sum of its proper divisors (1).

197719596553 is an equidigital number, since it uses as much as digits as its factorization.

197719596553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80372250, while the sum is 67.

The spelling of 197719596553 in words is "one hundred ninety-seven billion, seven hundred nineteen million, five hundred ninety-six thousand, five hundred fifty-three".