12310578378 has 24 divisors (see below), whose sum is σ = 30483337248. Its totient is φ = 3517308072.

The previous prime is 12310578377. The next prime is 12310578383. The reversal of 12310578378 is 87387501321.

12310578378 is a `hidden beast` number, since 1 + 2 + 3 + 1 + 0 + 578 + 3 + 78 = 666.

It is a super-2 number, since 2×12310578378² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12310578377) 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, 48851376 + ... + 48851627.

It is an arithmetic number, because the mean of its divisors is an integer number (1270139052).

Almost surely, 2^12310578378 is an apocalyptic number.

12310578378 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

12310578378 is an abundant number, since it is smaller than the sum of its proper divisors (18172758870).

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

12310578378 is a wasteful number, since it uses less digits than its factorization.

12310578378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97703018 (or 97703015 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 12310578378 in words is "twelve billion, three hundred ten million, five hundred seventy-eight thousand, three hundred seventy-eight".