215385070651 has 2 divisors, whose sum is σ = 215385070652. Its totient is φ = 215385070650.

The previous prime is 215385070643. The next prime is 215385070711. The reversal of 215385070651 is 156070583512.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 215385070651 - 2³ = 215385070643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 215385070598 and 215385070607.

It is not a weakly prime, because it can be changed into another prime (215385070151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107692535325 + 107692535326.

It is an arithmetic number, because the mean of its divisors is an integer number (107692535326).

Almost surely, 2^215385070651 is an apocalyptic number.

215385070651 is a deficient number, since it is larger than the sum of its proper divisors (1).

215385070651 is an equidigital number, since it uses as much as digits as its factorization.

215385070651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252000, while the sum is 43.

The spelling of 215385070651 in words is "two hundred fifteen billion, three hundred eighty-five million, seventy thousand, six hundred fifty-one".