213400798451 has 2 divisors, whose sum is σ = 213400798452. Its totient is φ = 213400798450.

The previous prime is 213400798399. The next prime is 213400798463. The reversal of 213400798451 is 154897004312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 213400798451 - 2²² = 213396604147 is a prime.

It is not a weakly prime, because it can be changed into another prime (213400791451) 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, 106700399225 + 106700399226.

It is an arithmetic number, because the mean of its divisors is an integer number (106700399226).

Almost surely, 2^213400798451 is an apocalyptic number.

213400798451 is a deficient number, since it is larger than the sum of its proper divisors (1).

213400798451 is an equidigital number, since it uses as much as digits as its factorization.

213400798451 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 241920, while the sum is 44.

The spelling of 213400798451 in words is "two hundred thirteen billion, four hundred million, seven hundred ninety-eight thousand, four hundred fifty-one".