210995242257403 has 2 divisors, whose sum is σ = 210995242257404. Its totient is φ = 210995242257402.

The previous prime is 210995242257383. The next prime is 210995242257409. The reversal of 210995242257403 is 304752242599012.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210995242257403 is a prime.

It is not a weakly prime, because it can be changed into another prime (210995242257409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105497621128701 + 105497621128702.

It is an arithmetic number, because the mean of its divisors is an integer number (105497621128702).

Almost surely, 2^{210995242257403} is an apocalyptic number.

210995242257403 is a deficient number, since it is larger than the sum of its proper divisors (1).

210995242257403 is an equidigital number, since it uses as much as digits as its factorization.

210995242257403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 55.

The spelling of 210995242257403 in words is "two hundred ten trillion, nine hundred ninety-five billion, two hundred forty-two million, two hundred fifty-seven thousand, four hundred three".