77344812228 has 24 divisors (see below), whose sum is σ = 180481648480. Its totient is φ = 25780115520.

The previous prime is 77344812211. The next prime is 77344812269. The reversal of 77344812228 is 82221844377.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41568 + ... + 395496.

Almost surely, 2^77344812228 is an apocalyptic number.

It is an amenable number.

77344812228 is an abundant number, since it is smaller than the sum of its proper divisors (103136836252).

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

77344812228 is a wasteful number, since it uses less digits than its factorization.

77344812228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372147 (or 372145 counting only the distinct ones).

The product of its digits is 1204224, while the sum is 48.

The spelling of 77344812228 in words is "seventy-seven billion, three hundred forty-four million, eight hundred twelve thousand, two hundred twenty-eight".