202170379553 has 2 divisors, whose sum is σ = 202170379554. Its totient is φ = 202170379552.

The previous prime is 202170379487. The next prime is 202170379559. The reversal of 202170379553 is 355973071202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110235288289 + 91935091264 = 332017^2 + 303208^2 .

It is a cyclic number.

It is not a de Polignac number, because 202170379553 - 2²⁶ = 202103270689 is a prime.

It is not a weakly prime, because it can be changed into another prime (202170379559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101085189776 + 101085189777.

It is an arithmetic number, because the mean of its divisors is an integer number (101085189777).

Almost surely, 2^202170379553 is an apocalyptic number.

It is an amenable number.

202170379553 is a deficient number, since it is larger than the sum of its proper divisors (1).

202170379553 is an equidigital number, since it uses as much as digits as its factorization.

202170379553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 202170379553 in words is "two hundred two billion, one hundred seventy million, three hundred seventy-nine thousand, five hundred fifty-three".