1626816068089 has 3 divisors (see below), whose sum is σ = 1626817343557. Its totient is φ = 1626814792622.

The previous prime is 1626816068081. The next prime is 1626816068107. The reversal of 1626816068089 is 9808606186261.

The square root of 1626816068089 is 1275467.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1626816068089 - 2³ = 1626816068081 is a prime.

It is a super-2 number, since 2×1626816068089² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1626816068081) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 637734 + ... + 1913200.

Almost surely, 2^{1626816068089} is an apocalyptic number.

1626816068089 is the 1275467-th square number.

1626816068089 is the 637734-th centered octagonal number.

It is an amenable number.

1626816068089 is a deficient number, since it is larger than the sum of its proper divisors (1275468).

1626816068089 is an frugal number, since it uses more digits than its factorization.

1626816068089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2550934 (or 1275467 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 61.

The spelling of 1626816068089 in words is "one trillion, six hundred twenty-six billion, eight hundred sixteen million, sixty-eight thousand, eighty-nine".