245122513553 has 4 divisors (see below), whose sum is σ = 250823037168. Its totient is φ = 239421989940.

The previous prime is 245122513549. The next prime is 245122513577. The reversal of 245122513553 is 355315221542.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 355315221542 = 2 ⋅177657610771.

It is a cyclic number.

It is not a de Polignac number, because 245122513553 - 2² = 245122513549 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245122513453) 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 in 3 ways as a sum of consecutive naturals, for example, 2850261743 + ... + 2850261828.

It is an arithmetic number, because the mean of its divisors is an integer number (62705759292).

Almost surely, 2^245122513553 is an apocalyptic number.

It is an amenable number.

245122513553 is a deficient number, since it is larger than the sum of its proper divisors (5700523615).

245122513553 is an equidigital number, since it uses as much as digits as its factorization.

245122513553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5700523614.

The product of its digits is 180000, while the sum is 38.

The spelling of 245122513553 in words is "two hundred forty-five billion, one hundred twenty-two million, five hundred thirteen thousand, five hundred fifty-three".