11772878328 has 24 divisors (see below), whose sum is σ = 31884879000. Its totient is φ = 3924292752.

The previous prime is 11772878323. The next prime is 11772878489. The reversal of 11772878328 is 82387827711.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11772878323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81756028 + ... + 81756171.

It is an arithmetic number, because the mean of its divisors is an integer number (1328536625).

Almost surely, 2^11772878328 is an apocalyptic number.

11772878328 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11772878328 is an abundant number, since it is smaller than the sum of its proper divisors (20112000672).

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

11772878328 is a wasteful number, since it uses less digits than its factorization.

11772878328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163512211 (or 163512204 counting only the distinct ones).

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

The spelling of 11772878328 in words is "eleven billion, seven hundred seventy-two million, eight hundred seventy-eight thousand, three hundred twenty-eight".