210797652893 has 2 divisors, whose sum is σ = 210797652894. Its totient is φ = 210797652892.

The previous prime is 210797652887. The next prime is 210797652983. The reversal of 210797652893 is 398256797012.

Together with next prime (210797652983) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110259194809 + 100538458084 = 332053^2 + 317078^2 .

It is a cyclic number.

It is not a de Polignac number, because 210797652893 - 2⁶ = 210797652829 is a prime.

It is a super-2 number, since 2×210797652893² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210797652853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105398826446 + 105398826447.

It is an arithmetic number, because the mean of its divisors is an integer number (105398826447).

Almost surely, 2^210797652893 is an apocalyptic number.

It is an amenable number.

210797652893 is a deficient number, since it is larger than the sum of its proper divisors (1).

210797652893 is an equidigital number, since it uses as much as digits as its factorization.

210797652893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 59.

The spelling of 210797652893 in words is "two hundred ten billion, seven hundred ninety-seven million, six hundred fifty-two thousand, eight hundred ninety-three".