70245209865 has 16 divisors (see below), whose sum is σ = 112407523200. Its totient is φ = 37459049472.

The previous prime is 70245209861. The next prime is 70245209891. The reversal of 70245209865 is 56890254207.

It is not a de Polignac number, because 70245209865 - 2² = 70245209861 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70245209861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200325 + ... + 424994.

It is an arithmetic number, because the mean of its divisors is an integer number (7025470200).

Almost surely, 2^70245209865 is an apocalyptic number.

It is an amenable number.

70245209865 is a deficient number, since it is larger than the sum of its proper divisors (42162313335).

70245209865 is a wasteful number, since it uses less digits than its factorization.

70245209865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 632816.

The product of its (nonzero) digits is 1209600, while the sum is 48.

The spelling of 70245209865 in words is "seventy billion, two hundred forty-five million, two hundred nine thousand, eight hundred sixty-five".