245500661517 has 16 divisors (see below), whose sum is σ = 329628245760. Its totient is φ = 162521416512.

The previous prime is 245500661513. The next prime is 245500661563. The reversal of 245500661517 is 715166005542.

It is not a de Polignac number, because 245500661517 - 2² = 245500661513 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245500661513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 580959 + ... + 910227.

It is an arithmetic number, because the mean of its divisors is an integer number (20601765360).

Almost surely, 2^245500661517 is an apocalyptic number.

It is an amenable number.

245500661517 is a deficient number, since it is larger than the sum of its proper divisors (84127584243).

245500661517 is a wasteful number, since it uses less digits than its factorization.

245500661517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331012.

The product of its (nonzero) digits is 252000, while the sum is 42.

The spelling of 245500661517 in words is "two hundred forty-five billion, five hundred million, six hundred sixty-one thousand, five hundred seventeen".