978345853409 has 8 divisors (see below), whose sum is σ = 983966925312. Its totient is φ = 972729978160.

The previous prime is 978345853357. The next prime is 978345853421. The reversal of 978345853409 is 904358543879.

978345853409 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 978345853409 - 2²⁸ = 978077417953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (978345853469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921239 + ... + 1674924.

It is an arithmetic number, because the mean of its divisors is an integer number (122995865664).

Almost surely, 2^978345853409 is an apocalyptic number.

It is an amenable number.

978345853409 is a deficient number, since it is larger than the sum of its proper divisors (5621071903).

978345853409 is a wasteful number, since it uses less digits than its factorization.

978345853409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598327.

The product of its (nonzero) digits is 130636800, while the sum is 65.

The spelling of 978345853409 in words is "nine hundred seventy-eight billion, three hundred forty-five million, eight hundred fifty-three thousand, four hundred nine".