216697130545579 has 2 divisors, whose sum is σ = 216697130545580. Its totient is φ = 216697130545578.

The previous prime is 216697130545541. The next prime is 216697130545607. The reversal of 216697130545579 is 975545031796612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 216697130545579 - 2⁴³ = 207901037523371 is a prime.

It is not a weakly prime, because it can be changed into another prime (216697130545529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108348565272789 + 108348565272790.

It is an arithmetic number, because the mean of its divisors is an integer number (108348565272790).

Almost surely, 2^{216697130545579} is an apocalyptic number.

216697130545579 is a deficient number, since it is larger than the sum of its proper divisors (1).

216697130545579 is an equidigital number, since it uses as much as digits as its factorization.

216697130545579 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 428652000, while the sum is 70.

The spelling of 216697130545579 in words is "two hundred sixteen trillion, six hundred ninety-seven billion, one hundred thirty million, five hundred forty-five thousand, five hundred seventy-nine".