2186358122551 has 2 divisors, whose sum is σ = 2186358122552. Its totient is φ = 2186358122550.

The previous prime is 2186358122471. The next prime is 2186358122623. The reversal of 2186358122551 is 1552218536812.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2186358122551 - 2¹³ = 2186358114359 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2186358122495 and 2186358122504.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2186358128551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093179061275 + 1093179061276.

It is an arithmetic number, because the mean of its divisors is an integer number (1093179061276).

Almost surely, 2^{2186358122551} is an apocalyptic number.

2186358122551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2186358122551 is an equidigital number, since it uses as much as digits as its factorization.

2186358122551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1152000, while the sum is 49.

The spelling of 2186358122551 in words is "two trillion, one hundred eighty-six billion, three hundred fifty-eight million, one hundred twenty-two thousand, five hundred fifty-one".