12177788328 has 48 divisors (see below), whose sum is σ = 33540530400. Its totient is φ = 3990460320.

The previous prime is 12177788321. The next prime is 12177788333. The reversal of 12177788328 is 82388777121.

It is not an unprimeable number, because it can be changed into a prime (12177788321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1429108 + ... + 1437603.

It is an arithmetic number, because the mean of its divisors is an integer number (698761050).

Almost surely, 2^12177788328 is an apocalyptic number.

12177788328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12177788328 is an abundant number, since it is smaller than the sum of its proper divisors (21362742072).

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

12177788328 is a wasteful number, since it uses less digits than its factorization.

12177788328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2866782 (or 2866775 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 54.

The spelling of 12177788328 in words is "twelve billion, one hundred seventy-seven million, seven hundred eighty-eight thousand, three hundred twenty-eight".