213011053817453 has 2 divisors, whose sum is σ = 213011053817454. Its totient is φ = 213011053817452.

The previous prime is 213011053817449. The next prime is 213011053817561. The reversal of 213011053817453 is 354718350110312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 124900785513604 + 88110268303849 = 11175902^2 + 9386707^2 .

It is a cyclic number.

It is not a de Polignac number, because 213011053817453 - 2² = 213011053817449 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213011053817753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106505526908726 + 106505526908727.

It is an arithmetic number, because the mean of its divisors is an integer number (106505526908727).

Almost surely, 2^{213011053817453} is an apocalyptic number.

It is an amenable number.

213011053817453 is a deficient number, since it is larger than the sum of its proper divisors (1).

213011053817453 is an equidigital number, since it uses as much as digits as its factorization.

213011053817453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 302400, while the sum is 44.

The spelling of 213011053817453 in words is "two hundred thirteen trillion, eleven billion, fifty-three million, eight hundred seventeen thousand, four hundred fifty-three".