245663345985 has 32 divisors (see below), whose sum is σ = 399791124480. Its totient is φ = 128796127488.

The previous prime is 245663345923. The next prime is 245663346001. The reversal of 245663345985 is 589543366542.

It is not a de Polignac number, because 245663345985 - 2¹³ = 245663337793 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383902 + ... + 799191.

It is an arithmetic number, because the mean of its divisors is an integer number (12493472640).

Almost surely, 2^245663345985 is an apocalyptic number.

It is an amenable number.

245663345985 is a deficient number, since it is larger than the sum of its proper divisors (154127778495).

245663345985 is a wasteful number, since it uses less digits than its factorization.

245663345985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1183337.

The product of its digits is 93312000, while the sum is 60.

The spelling of 245663345985 in words is "two hundred forty-five billion, six hundred sixty-three million, three hundred forty-five thousand, nine hundred eighty-five".