2198054348977 has 2 divisors, whose sum is σ = 2198054348978. Its totient is φ = 2198054348976.

The previous prime is 2198054348927. The next prime is 2198054349011. The reversal of 2198054348977 is 7798434508912.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2092720997376 + 105333351601 = 1446624^2 + 324551^2 .

It is a cyclic number.

It is not a de Polignac number, because 2198054348977 - 2²⁷ = 2197920131249 is a prime.

It is not a weakly prime, because it can be changed into another prime (2198054348927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099027174488 + 1099027174489.

It is an arithmetic number, because the mean of its divisors is an integer number (1099027174489).

Almost surely, 2^{2198054348977} is an apocalyptic number.

It is an amenable number.

2198054348977 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198054348977 is an equidigital number, since it uses as much as digits as its factorization.

2198054348977 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 121927680, while the sum is 67.

The spelling of 2198054348977 in words is "two trillion, one hundred ninety-eight billion, fifty-four million, three hundred forty-eight thousand, nine hundred seventy-seven".