245521133266 has 4 divisors (see below), whose sum is σ = 368281699902. Its totient is φ = 122760566632.

The previous prime is 245521133239. The next prime is 245521133339. The reversal of 245521133266 is 662331125542.

245521133266 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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., 243711056241 + 1810077025 = 493671^2 + 42545^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61380283315 + ... + 61380283318.

Almost surely, 2^245521133266 is an apocalyptic number.

245521133266 is a deficient number, since it is larger than the sum of its proper divisors (122760566636).

245521133266 is a wasteful number, since it uses less digits than its factorization.

245521133266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122760566635.

The product of its digits is 259200, while the sum is 40.

The spelling of 245521133266 in words is "two hundred forty-five billion, five hundred twenty-one million, one hundred thirty-three thousand, two hundred sixty-six".