1690656012159 has 8 divisors (see below), whose sum is σ = 2254216044672. Its totient is φ = 1127099993880.

The previous prime is 1690656012091. The next prime is 1690656012193. The reversal of 1690656012159 is 9512106560961.

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

It is not a de Polignac number, because 1690656012159 - 2⁹ = 1690656011647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1690656012259) 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, 177844 + ... + 1847414.

It is an arithmetic number, because the mean of its divisors is an integer number (281777005584).

Almost surely, 2^{1690656012159} is an apocalyptic number.

1690656012159 is a deficient number, since it is larger than the sum of its proper divisors (563560032513).

1690656012159 is a wasteful number, since it uses less digits than its factorization.

1690656012159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007117.

The product of its (nonzero) digits is 874800, while the sum is 51.

The spelling of 1690656012159 in words is "one trillion, six hundred ninety billion, six hundred fifty-six million, twelve thousand, one hundred fifty-nine".