213502606553 has 2 divisors, whose sum is σ = 213502606554. Its totient is φ = 213502606552.

The previous prime is 213502606523. The next prime is 213502606561. The reversal of 213502606553 is 355606205312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110511034624 + 102991571929 = 332432^2 + 320923^2 .

It is a cyclic number.

It is not a de Polignac number, because 213502606553 - 2³⁰ = 212428864729 is a prime.

It is not a weakly prime, because it can be changed into another prime (213502606523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106751303276 + 106751303277.

It is an arithmetic number, because the mean of its divisors is an integer number (106751303277).

Almost surely, 2^213502606553 is an apocalyptic number.

It is an amenable number.

213502606553 is a deficient number, since it is larger than the sum of its proper divisors (1).

213502606553 is an equidigital number, since it uses as much as digits as its factorization.

213502606553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 38.

The spelling of 213502606553 in words is "two hundred thirteen billion, five hundred two million, six hundred six thousand, five hundred fifty-three".