245541257473 has 8 divisors (see below), whose sum is σ = 247030847336. Its totient is φ = 244053129600.

The previous prime is 245541257461. The next prime is 245541257491. The reversal of 245541257473 is 374752145542.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34316451009 + 211224806464 = 185247^2 + 459592^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245541257473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245541257173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27636 + ... + 701317.

It is an arithmetic number, because the mean of its divisors is an integer number (30878855917).

Almost surely, 2^245541257473 is an apocalyptic number.

It is an amenable number.

245541257473 is a deficient number, since it is larger than the sum of its proper divisors (1489589863).

245541257473 is a wasteful number, since it uses less digits than its factorization.

245541257473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730995.

The product of its digits is 4704000, while the sum is 49.

The spelling of 245541257473 in words is "two hundred forty-five billion, five hundred forty-one million, two hundred fifty-seven thousand, four hundred seventy-three".