409235816880978 has 32 divisors (see below), whose sum is σ = 861555351422400. Its totient is φ = 129231423737856.

The previous prime is 409235816880929. The next prime is 409235816880991. The reversal of 409235816880978 is 879088618532904.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2785650 + ... + 28744242.

It is an arithmetic number, because the mean of its divisors is an integer number (26923604731950).

It is a 1-persistent number, because it is pandigital, but 2⋅409235816880978 = 818471633761956 is not.

Almost surely, 2^{409235816880978} is an apocalyptic number.

409235816880978 is an abundant number, since it is smaller than the sum of its proper divisors (452319534541422).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

409235816880978 is a wasteful number, since it uses less digits than its factorization.

409235816880978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26096906.

The product of its (nonzero) digits is 1672151040, while the sum is 78.

The spelling of 409235816880978 in words is "four hundred nine trillion, two hundred thirty-five billion, eight hundred sixteen million, eight hundred eighty thousand, nine hundred seventy-eight".