245326553477 has 4 divisors (see below), whose sum is σ = 247755529356. Its totient is φ = 242897577600.

The previous prime is 245326553431. The next prime is 245326553491. The reversal of 245326553477 is 774355623542.

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

It can be written as a sum of positive squares in 2 ways, for example, as 105928117156 + 139398436321 = 325466^2 + 373361^2 .

It is a cyclic number.

It is not a de Polignac number, because 245326553477 - 2⁶ = 245326553413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245326553177) 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, 1214487788 + ... + 1214487989.

It is an arithmetic number, because the mean of its divisors is an integer number (61938882339).

Almost surely, 2^245326553477 is an apocalyptic number.

It is an amenable number.

245326553477 is a deficient number, since it is larger than the sum of its proper divisors (2428975879).

245326553477 is a wasteful number, since it uses less digits than its factorization.

245326553477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428975878.

The product of its digits is 21168000, while the sum is 53.

The spelling of 245326553477 in words is "two hundred forty-five billion, three hundred twenty-six million, five hundred fifty-three thousand, four hundred seventy-seven".