245032505513 has 8 divisors (see below), whose sum is σ = 256403215368. Its totient is φ = 233911701504.

The previous prime is 245032505423. The next prime is 245032505533. The reversal of 245032505513 is 315505230542.

It can be written as a sum of positive squares in 4 ways, for example, as 141626526889 + 103405978624 = 376333^2 + 321568^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 245032505513 - 2¹⁸ = 245032243369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245032505533) 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, 62474456 + ... + 62478377.

It is an arithmetic number, because the mean of its divisors is an integer number (32050401921).

Almost surely, 2^245032505513 is an apocalyptic number.

It is an amenable number.

245032505513 is a deficient number, since it is larger than the sum of its proper divisors (11370709855).

245032505513 is a wasteful number, since it uses less digits than its factorization.

245032505513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124952923.

The product of its (nonzero) digits is 90000, while the sum is 35.

The spelling of 245032505513 in words is "two hundred forty-five billion, thirty-two million, five hundred five thousand, five hundred thirteen".