77604158220 has 48 divisors (see below), whose sum is σ = 228728048640. Its totient is φ = 19605260736.

The previous prime is 77604158183. The next prime is 77604158221. The reversal of 77604158220 is 2285140677.

It is not an unprimeable number, because it can be changed into a prime (77604158221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34035772 + ... + 34038051.

It is an arithmetic number, because the mean of its divisors is an integer number (4765167680).

Almost surely, 2^77604158220 is an apocalyptic number.

It is an amenable number.

77604158220 is an abundant number, since it is smaller than the sum of its proper divisors (151123890420).

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

77604158220 is a wasteful number, since it uses less digits than its factorization.

77604158220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68073854 (or 68073852 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 42.

Adding to 77604158220 its reverse (2285140677), we get a palindrome (79889298897).

The spelling of 77604158220 in words is "seventy-seven billion, six hundred four million, one hundred fifty-eight thousand, two hundred twenty".