213694944401 has 2 divisors, whose sum is σ = 213694944402. Its totient is φ = 213694944400.

The previous prime is 213694944373. The next prime is 213694944409. The reversal of 213694944401 is 104449496312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 139711488400 + 73983456001 = 373780^2 + 271999^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213694944401 is a prime.

It is not a weakly prime, because it can be changed into another prime (213694944409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106847472200 + 106847472201.

It is an arithmetic number, because the mean of its divisors is an integer number (106847472201).

Almost surely, 2^213694944401 is an apocalyptic number.

It is an amenable number.

213694944401 is a deficient number, since it is larger than the sum of its proper divisors (1).

213694944401 is an equidigital number, since it uses as much as digits as its factorization.

213694944401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 47.

The spelling of 213694944401 in words is "two hundred thirteen billion, six hundred ninety-four million, nine hundred forty-four thousand, four hundred one".