70784242909 has 16 divisors (see below), whose sum is σ = 74063962224. Its totient is φ = 67585024000.

The previous prime is 70784242901. The next prime is 70784242931. The reversal of 70784242909 is 90924248707.

It can be written as a sum of positive squares in 8 ways, for example, as 3386890809 + 67397352100 = 58197^2 + 259610^2 .

It is a cyclic number.

It is not a de Polignac number, because 70784242909 - 2³ = 70784242901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70784242901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 830757 + ... + 911989.

It is an arithmetic number, because the mean of its divisors is an integer number (4628997639).

Almost surely, 2^70784242909 is an apocalyptic number.

It is an amenable number.

70784242909 is a deficient number, since it is larger than the sum of its proper divisors (3279719315).

70784242909 is a wasteful number, since it uses less digits than its factorization.

70784242909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81728.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 70784242909 in words is "seventy billion, seven hundred eighty-four million, two hundred forty-two thousand, nine hundred nine".