219125087957 has 2 divisors, whose sum is σ = 219125087958. Its totient is φ = 219125087956.

The previous prime is 219125087953. The next prime is 219125088029. The reversal of 219125087957 is 759780521912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111636842641 + 107488245316 = 334121^2 + 327854^2 .

It is a cyclic number.

It is not a de Polignac number, because 219125087957 - 2² = 219125087953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219125087953) 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, 109562543978 + 109562543979.

It is an arithmetic number, because the mean of its divisors is an integer number (109562543979).

Almost surely, 2^219125087957 is an apocalyptic number.

It is an amenable number.

219125087957 is a deficient number, since it is larger than the sum of its proper divisors (1).

219125087957 is an equidigital number, since it uses as much as digits as its factorization.

219125087957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3175200, while the sum is 56.

The spelling of 219125087957 in words is "two hundred nineteen billion, one hundred twenty-five million, eighty-seven thousand, nine hundred fifty-seven".