66021496199 has 2 divisors, whose sum is σ = 66021496200. Its totient is φ = 66021496198.

The previous prime is 66021496109. The next prime is 66021496237. The reversal of 66021496199 is 99169412066.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66021496199 is a prime.

It is a super-3 number, since 3×66021496199³ (a number of 33 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 66021496199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66021496109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33010748099 + 33010748100.

It is an arithmetic number, because the mean of its divisors is an integer number (33010748100).

Almost surely, 2^66021496199 is an apocalyptic number.

66021496199 is a deficient number, since it is larger than the sum of its proper divisors (1).

66021496199 is an equidigital number, since it uses as much as digits as its factorization.

66021496199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1259712, while the sum is 53.

The spelling of 66021496199 in words is "sixty-six billion, twenty-one million, four hundred ninety-six thousand, one hundred ninety-nine".