216188878153 has 2 divisors, whose sum is σ = 216188878154. Its totient is φ = 216188878152.

The previous prime is 216188878123. The next prime is 216188878193. The reversal of 216188878153 is 351878881612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203678008249 + 12510869904 = 451307^2 + 111852^2 .

It is a cyclic number.

It is not a de Polignac number, because 216188878153 - 2³³ = 207598943561 is a prime.

It is not a weakly prime, because it can be changed into another prime (216188878123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108094439076 + 108094439077.

It is an arithmetic number, because the mean of its divisors is an integer number (108094439077).

Almost surely, 2^216188878153 is an apocalyptic number.

It is an amenable number.

216188878153 is a deficient number, since it is larger than the sum of its proper divisors (1).

216188878153 is an equidigital number, since it uses as much as digits as its factorization.

216188878153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5160960, while the sum is 58.

The spelling of 216188878153 in words is "two hundred sixteen billion, one hundred eighty-eight million, eight hundred seventy-eight thousand, one hundred fifty-three".