20919166710026 has 8 divisors (see below), whose sum is σ = 33792500070084. Its totient is φ = 9655000020000.

The previous prime is 20919166709983. The next prime is 20919166710037. The reversal of 20919166710026 is 62001766191902.

It can be written as a sum of positive squares in 2 ways, for example, as 16542514428001 + 4376652282025 = 4067249^2 + 2092045^2 .

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

It is a super-2 number, since 2×20919166710026² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 402291667475 + ... + 402291667526.

Almost surely, 2^{20919166710026} is an apocalyptic number.

20919166710026 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20919166710026 is a deficient number, since it is larger than the sum of its proper divisors (12873333360058).

20919166710026 is a wasteful number, since it uses less digits than its factorization.

20919166710026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804583335016.

The product of its (nonzero) digits is 489888, while the sum is 50.

The spelling of 20919166710026 in words is "twenty trillion, nine hundred nineteen billion, one hundred sixty-six million, seven hundred ten thousand, twenty-six".