2186358128551 has 2 divisors, whose sum is σ = 2186358128552. Its totient is φ = 2186358128550.

The previous prime is 2186358128501. The next prime is 2186358128561. The reversal of 2186358128551 is 1558218536812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2186358128551 - 2¹⁷ = 2186357997479 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2186358128492 and 2186358128501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2186358128501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093179064275 + 1093179064276.

It is an arithmetic number, because the mean of its divisors is an integer number (1093179064276).

Almost surely, 2^{2186358128551} is an apocalyptic number.

2186358128551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2186358128551 is an equidigital number, since it uses as much as digits as its factorization.

2186358128551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4608000, while the sum is 55.

The spelling of 2186358128551 in words is "two trillion, one hundred eighty-six billion, three hundred fifty-eight million, one hundred twenty-eight thousand, five hundred fifty-one".