541698648209 has 2 divisors, whose sum is σ = 541698648210. Its totient is φ = 541698648208.

The previous prime is 541698648157. The next prime is 541698648229. The reversal of 541698648209 is 902846896145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329163817984 + 212534830225 = 573728^2 + 461015^2 .

It is a cyclic number.

It is not a de Polignac number, because 541698648209 - 2⁸ = 541698647953 is a prime.

It is not a weakly prime, because it can be changed into another prime (541698648229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270849324104 + 270849324105.

It is an arithmetic number, because the mean of its divisors is an integer number (270849324105).

Almost surely, 2^541698648209 is an apocalyptic number.

It is an amenable number.

541698648209 is a deficient number, since it is larger than the sum of its proper divisors (1).

541698648209 is an equidigital number, since it uses as much as digits as its factorization.

541698648209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 541698648209 in words is "five hundred forty-one billion, six hundred ninety-eight million, six hundred forty-eight thousand, two hundred nine".