245802856658 has 18 divisors (see below), whose sum is σ = 376766478711. Its totient is φ = 120270377964.

The previous prime is 245802856609. The next prime is 245802856661. The reversal of 245802856658 is 856658208542.

It can be written as a sum of positive squares in only one way, i.e., 122901428329 + 122901428329 = 350573^2 + 350573^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=350573.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 245802856597 and 245802856606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 32950133 + ... + 32957591.

Almost surely, 2^245802856658 is an apocalyptic number.

245802856658 is a deficient number, since it is larger than the sum of its proper divisors (130963622053).

245802856658 is an frugal number, since it uses more digits than its factorization.

245802856658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15014 (or 7508 counting only the distinct ones).

The product of its (nonzero) digits is 36864000, while the sum is 59.

The spelling of 245802856658 in words is "two hundred forty-five billion, eight hundred two million, eight hundred fifty-six thousand, six hundred fifty-eight".