20556014025111 has 4 divisors (see below), whose sum is σ = 27408018700152. Its totient is φ = 13704009350072.

The previous prime is 20556014025109. The next prime is 20556014025119. The reversal of 20556014025111 is 11152041065502.

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 20556014025111 - 2¹ = 20556014025109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20556014025119) 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, 3426002337516 + ... + 3426002337521.

It is an arithmetic number, because the mean of its divisors is an integer number (6852004675038).

Almost surely, 2^{20556014025111} is an apocalyptic number.

20556014025111 is a deficient number, since it is larger than the sum of its proper divisors (6852004675041).

20556014025111 is an equidigital number, since it uses as much as digits as its factorization.

20556014025111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6852004675040.

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 20556014025111 in words is "twenty trillion, five hundred fifty-six billion, fourteen million, twenty-five thousand, one hundred eleven".