77830730232 has 64 divisors (see below), whose sum is σ = 198385200000. Its totient is φ = 25436471424.

The previous prime is 77830730209. The next prime is 77830730291. The reversal of 77830730232 is 23203703877.

It is a congruent number.

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, 1886319 + ... + 1927137.

It is an arithmetic number, because the mean of its divisors is an integer number (3099768750).

Almost surely, 2^77830730232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 77830730232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99192600000).

77830730232 is an abundant number, since it is smaller than the sum of its proper divisors (120554469768).

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

77830730232 is a wasteful number, since it uses less digits than its factorization.

77830730232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42380 (or 42376 counting only the distinct ones).

The product of its (nonzero) digits is 296352, while the sum is 42.

The spelling of 77830730232 in words is "seventy-seven billion, eight hundred thirty million, seven hundred thirty thousand, two hundred thirty-two".