217011552451 has 2 divisors, whose sum is σ = 217011552452. Its totient is φ = 217011552450.

The previous prime is 217011552437. The next prime is 217011552467. The reversal of 217011552451 is 154255110712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217011552451 - 2⁵ = 217011552419 is a prime.

It is not a weakly prime, because it can be changed into another prime (217011552421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108505776225 + 108505776226.

It is an arithmetic number, because the mean of its divisors is an integer number (108505776226).

Almost surely, 2^217011552451 is an apocalyptic number.

217011552451 is a deficient number, since it is larger than the sum of its proper divisors (1).

217011552451 is an equidigital number, since it uses as much as digits as its factorization.

217011552451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14000, while the sum is 34.

The spelling of 217011552451 in words is "two hundred seventeen billion, eleven million, five hundred fifty-two thousand, four hundred fifty-one".