12278124864 has 336 divisors, whose sum is σ = 38077079040. Its totient is φ = 3773952000.

The previous prime is 12278124857. The next prime is 12278124871. The reversal of 12278124864 is 46842187221.

It is an interprime number because it is at equal distance from previous prime (12278124857) and next prime (12278124871).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 67834854 + ... + 67835034.

It is an arithmetic number, because the mean of its divisors is an integer number (113324640).

Almost surely, 2^12278124864 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 12278124864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19038539520).

12278124864 is an abundant number, since it is smaller than the sum of its proper divisors (25798954176).

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

12278124864 is a wasteful number, since it uses less digits than its factorization.

12278124864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390 (or 377 counting only the distinct ones).

The product of its digits is 344064, while the sum is 45.

The spelling of 12278124864 in words is "twelve billion, two hundred seventy-eight million, one hundred twenty-four thousand, eight hundred sixty-four".