20556614401151 has 2 divisors, whose sum is σ = 20556614401152. Its totient is φ = 20556614401150.

The previous prime is 20556614401027. The next prime is 20556614401189. The reversal of 20556614401151 is 15110441665502.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20556614401151 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20556614401099 and 20556614401108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20556614401451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10278307200575 + 10278307200576.

It is an arithmetic number, because the mean of its divisors is an integer number (10278307200576).

Almost surely, 2^{20556614401151} is an apocalyptic number.

20556614401151 is a deficient number, since it is larger than the sum of its proper divisors (1).

20556614401151 is an equidigital number, since it uses as much as digits as its factorization.

20556614401151 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144000, while the sum is 41.

The spelling of 20556614401151 in words is "twenty trillion, five hundred fifty-six billion, six hundred fourteen million, four hundred one thousand, one hundred fifty-one".