215354051251 has 2 divisors, whose sum is σ = 215354051252. Its totient is φ = 215354051250.

The previous prime is 215354051179. The next prime is 215354051261. The reversal of 215354051251 is 152150453512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215354051251 - 2⁹ = 215354050739 is a prime.

It is not a weakly prime, because it can be changed into another prime (215354051261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107677025625 + 107677025626.

It is an arithmetic number, because the mean of its divisors is an integer number (107677025626).

Almost surely, 2^215354051251 is an apocalyptic number.

215354051251 is a deficient number, since it is larger than the sum of its proper divisors (1).

215354051251 is an equidigital number, since it uses as much as digits as its factorization.

215354051251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 34.

The spelling of 215354051251 in words is "two hundred fifteen billion, three hundred fifty-four million, fifty-one thousand, two hundred fifty-one".