2078408510609 has 4 divisors (see below), whose sum is σ = 2187798432240. Its totient is φ = 1969018588980.

The previous prime is 2078408510603. The next prime is 2078408510639. The reversal of 2078408510609 is 9060158048702.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2078408510609 - 2³⁶ = 2009689033873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2078408510603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54694960787 + ... + 54694960824.

It is an arithmetic number, because the mean of its divisors is an integer number (546949608060).

Almost surely, 2^{2078408510609} is an apocalyptic number.

It is an amenable number.

2078408510609 is a deficient number, since it is larger than the sum of its proper divisors (109389921631).

2078408510609 is a wasteful number, since it uses less digits than its factorization.

2078408510609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109389921630.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 2078408510609 in words is "two trillion, seventy-eight billion, four hundred eight million, five hundred ten thousand, six hundred nine".