548797821197 has 2 divisors, whose sum is σ = 548797821198. Its totient is φ = 548797821196.

The previous prime is 548797821149. The next prime is 548797821203. The reversal of 548797821197 is 791128797845.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 513041280361 + 35756540836 = 716269^2 + 189094^2 .

It is a cyclic number.

It is not a de Polignac number, because 548797821197 - 2³⁰ = 547724079373 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548797821697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274398910598 + 274398910599.

It is an arithmetic number, because the mean of its divisors is an integer number (274398910599).

Almost surely, 2^548797821197 is an apocalyptic number.

It is an amenable number.

548797821197 is a deficient number, since it is larger than the sum of its proper divisors (1).

548797821197 is an equidigital number, since it uses as much as digits as its factorization.

548797821197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71124480, while the sum is 68.

The spelling of 548797821197 in words is "five hundred forty-eight billion, seven hundred ninety-seven million, eight hundred twenty-one thousand, one hundred ninety-seven".