215401305119951 has 2 divisors, whose sum is σ = 215401305119952. Its totient is φ = 215401305119950.

The previous prime is 215401305119873. The next prime is 215401305120013. The reversal of 215401305119951 is 159911503104512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215401305119951 - 2¹⁸ = 215401304857807 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215401305119896 and 215401305119905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215401305110951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107700652559975 + 107700652559976.

It is an arithmetic number, because the mean of its divisors is an integer number (107700652559976).

Almost surely, 2^{215401305119951} is an apocalyptic number.

215401305119951 is a deficient number, since it is larger than the sum of its proper divisors (1).

215401305119951 is an equidigital number, since it uses as much as digits as its factorization.

215401305119951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 47.

The spelling of 215401305119951 in words is "two hundred fifteen trillion, four hundred one billion, three hundred five million, one hundred nineteen thousand, nine hundred fifty-one".