20516626414223 has 4 divisors (see below), whose sum is σ = 21408653649648. Its totient is φ = 19624599178800.

The previous prime is 20516626414199. The next prime is 20516626414231. The reversal of 20516626414223 is 32241462661502.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20516626414223 - 2¹² = 20516626410127 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 (20516626414243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446013617678 + ... + 446013617723.

It is an arithmetic number, because the mean of its divisors is an integer number (5352163412412).

Almost surely, 2^{20516626414223} is an apocalyptic number.

20516626414223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

20516626414223 is a deficient number, since it is larger than the sum of its proper divisors (892027235425).

20516626414223 is an equidigital number, since it uses as much as digits as its factorization.

20516626414223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892027235424.

The product of its (nonzero) digits is 829440, while the sum is 44.

The spelling of 20516626414223 in words is "twenty trillion, five hundred sixteen billion, six hundred twenty-six million, four hundred fourteen thousand, two hundred twenty-three".