20556812016246 has 32 divisors (see below), whose sum is σ = 46298039970816. Its totient is φ = 6028390620000.

The previous prime is 20556812016163. The next prime is 20556812016269. The reversal of 20556812016246 is 64261021865502.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20556812016195 and 20556812016204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5023656805 + ... + 5023660896.

It is an arithmetic number, because the mean of its divisors is an integer number (1446813749088).

Almost surely, 2^{20556812016246} is an apocalyptic number.

20556812016246 is an abundant number, since it is smaller than the sum of its proper divisors (25741227954570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20556812016246 is a wasteful number, since it uses less digits than its factorization.

20556812016246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047317748.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 20556812016246 in words is "twenty trillion, five hundred fifty-six billion, eight hundred twelve million, sixteen thousand, two hundred forty-six".