197752270897 has 2 divisors, whose sum is σ = 197752270898. Its totient is φ = 197752270896.

The previous prime is 197752270843. The next prime is 197752270907. The reversal of 197752270897 is 798072257791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138831505201 + 58920765696 = 372601^2 + 242736^2 .

It is a cyclic number.

It is not a de Polignac number, because 197752270897 - 2²³ = 197743882289 is a prime.

It is not a weakly prime, because it can be changed into another prime (197752273897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98876135448 + 98876135449.

It is an arithmetic number, because the mean of its divisors is an integer number (98876135449).

Almost surely, 2^197752270897 is an apocalyptic number.

It is an amenable number.

197752270897 is a deficient number, since it is larger than the sum of its proper divisors (1).

197752270897 is an equidigital number, since it uses as much as digits as its factorization.

197752270897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31116960, while the sum is 64.

The spelling of 197752270897 in words is "one hundred ninety-seven billion, seven hundred fifty-two million, two hundred seventy thousand, eight hundred ninety-seven".