66490437619199 has 12 divisors (see below), whose sum is σ = 73085649546000. Its totient is φ = 60444926942400.

The previous prime is 66490437619169. The next prime is 66490437619297. The reversal of 66490437619199 is 99191673409466.

It is not a de Polignac number, because 66490437619199 - 2³⁶ = 66421718142463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66490437619129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3791927 + ... + 12139175.

It is an arithmetic number, because the mean of its divisors is an integer number (6090470795500).

Almost surely, 2^{66490437619199} is an apocalyptic number.

66490437619199 is a deficient number, since it is larger than the sum of its proper divisors (6595211926801).

66490437619199 is a wasteful number, since it uses less digits than its factorization.

66490437619199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413102 (or 8413091 counting only the distinct ones).

The product of its (nonzero) digits is 476171136, while the sum is 74.

The spelling of 66490437619199 in words is "sixty-six trillion, four hundred ninety billion, four hundred thirty-seven million, six hundred nineteen thousand, one hundred ninety-nine".