205453315124522 has 4 divisors (see below), whose sum is σ = 308179972686786. Its totient is φ = 102726657562260.

The previous prime is 205453315124521. The next prime is 205453315124537. The reversal of 205453315124522 is 225421513354502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 181488559989361 + 23964755135161 = 13471769^2 + 4895381^2 .

It is a super-2 number, since 2×205453315124522² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205453315124521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51363328781129 + ... + 51363328781132.

Almost surely, 2^{205453315124522} is an apocalyptic number.

205453315124522 is a deficient number, since it is larger than the sum of its proper divisors (102726657562264).

205453315124522 is a wasteful number, since it uses less digits than its factorization.

205453315124522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102726657562263.

The product of its (nonzero) digits is 1440000, while the sum is 44.

The spelling of 205453315124522 in words is "two hundred five trillion, four hundred fifty-three billion, three hundred fifteen million, one hundred twenty-four thousand, five hundred twenty-two".