216436413378 has 16 divisors (see below), whose sum is σ = 444572092800. Its totient is φ = 70195593456.

The previous prime is 216436413307. The next prime is 216436413379. The reversal of 216436413378 is 873314634612.

It is not an unprimeable number, because it can be changed into a prime (216436413379) 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, 487469178 + ... + 487469621.

It is an arithmetic number, because the mean of its divisors is an integer number (27785755800).

Almost surely, 2^216436413378 is an apocalyptic number.

216436413378 is an abundant number, since it is smaller than the sum of its proper divisors (228135679422).

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

216436413378 is a wasteful number, since it uses less digits than its factorization.

216436413378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974938841.

The product of its digits is 1741824, while the sum is 48.

The spelling of 216436413378 in words is "two hundred sixteen billion, four hundred thirty-six million, four hundred thirteen thousand, three hundred seventy-eight".