229379648778 has 72 divisors (see below), whose sum is σ = 578474395200. Its totient is φ = 65498040720.

The previous prime is 229379648713. The next prime is 229379648783. The reversal of 229379648778 is 877846973922.

229379648778 is a `hidden beast` number, since 2 + 2 + 9 + 3 + 79 + 6 + 487 + 78 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1421983 + ... + 1575053.

It is an arithmetic number, because the mean of its divisors is an integer number (8034366600).

Almost surely, 2^229379648778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 229379648778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289237197600).

229379648778 is an abundant number, since it is smaller than the sum of its proper divisors (349094746422).

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

229379648778 is a wasteful number, since it uses less digits than its factorization.

229379648778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154792 (or 154782 counting only the distinct ones).

The product of its digits is 512096256, while the sum is 72.

The spelling of 229379648778 in words is "two hundred twenty-nine billion, three hundred seventy-nine million, six hundred forty-eight thousand, seven hundred seventy-eight".