70642817809 has 8 divisors (see below), whose sum is σ = 71630058240. Its totient is φ = 69656105376.

The previous prime is 70642817801. The next prime is 70642817827. The reversal of 70642817809 is 90871824607.

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 70642817809 - 2³ = 70642817801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70642817801) 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 7 ways as a sum of consecutive naturals, for example, 141384 + ... + 401590.

It is an arithmetic number, because the mean of its divisors is an integer number (8953757280).

Almost surely, 2^70642817809 is an apocalyptic number.

It is an amenable number.

70642817809 is a deficient number, since it is larger than the sum of its proper divisors (987240431).

70642817809 is a wasteful number, since it uses less digits than its factorization.

70642817809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263999.

The product of its (nonzero) digits is 1354752, while the sum is 52.

The spelling of 70642817809 in words is "seventy billion, six hundred forty-two million, eight hundred seventeen thousand, eight hundred nine".