1669627397499 has 8 divisors (see below), whose sum is σ = 2247783163392. Its totient is φ = 1102278281640.

The previous prime is 1669627397497. The next prime is 1669627397513. The reversal of 1669627397499 is 9947937269661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1669627397499 - 2¹ = 1669627397497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1669627397497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2701662147 + ... + 2701662764.

It is an arithmetic number, because the mean of its divisors is an integer number (280972895424).

Almost surely, 2^{1669627397499} is an apocalyptic number.

1669627397499 is a deficient number, since it is larger than the sum of its proper divisors (578155765893).

1669627397499 is a wasteful number, since it uses less digits than its factorization.

1669627397499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5403325017.

The product of its digits is 1666598976, while the sum is 78.

The spelling of 1669627397499 in words is "one trillion, six hundred sixty-nine billion, six hundred twenty-seven million, three hundred ninety-seven thousand, four hundred ninety-nine".