63870020650867 has 2 divisors, whose sum is σ = 63870020650868. Its totient is φ = 63870020650866.

The previous prime is 63870020650783. The next prime is 63870020650903. The reversal of 63870020650867 is 76805602007836.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 63870020650867 - 2⁷ = 63870020650739 is a prime.

It is not a weakly prime, because it can be changed into another prime (63870020650067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31935010325433 + 31935010325434.

It is an arithmetic number, because the mean of its divisors is an integer number (31935010325434).

Almost surely, 2^{63870020650867} is an apocalyptic number.

63870020650867 is a deficient number, since it is larger than the sum of its proper divisors (1).

63870020650867 is an equidigital number, since it uses as much as digits as its factorization.

63870020650867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20321280, while the sum is 58.

The spelling of 63870020650867 in words is "sixty-three trillion, eight hundred seventy billion, twenty million, six hundred fifty thousand, eight hundred sixty-seven".