216697083144533 has 2 divisors, whose sum is σ = 216697083144534. Its totient is φ = 216697083144532.

The previous prime is 216697083144473. The next prime is 216697083144557. The reversal of 216697083144533 is 335441380796612.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 214132210428049 + 2564872716484 = 14633257^2 + 1601522^2 .

It is a cyclic number.

It is not a de Polignac number, because 216697083144533 - 2¹² = 216697083140437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (216697083144733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108348541572266 + 108348541572267.

It is an arithmetic number, because the mean of its divisors is an integer number (108348541572267).

It is a 1-persistent number, because it is pandigital, but 2⋅216697083144533 = 433394166289066 is not.

Almost surely, 2^{216697083144533} is an apocalyptic number.

It is an amenable number.

216697083144533 is a deficient number, since it is larger than the sum of its proper divisors (1).

216697083144533 is an equidigital number, since it uses as much as digits as its factorization.

216697083144533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78382080, while the sum is 62.

The spelling of 216697083144533 in words is "two hundred sixteen trillion, six hundred ninety-seven billion, eighty-three million, one hundred forty-four thousand, five hundred thirty-three".