1228679016840 has 576 divisors, whose sum is σ = 4555289793600. Its totient is φ = 286659394560.

The previous prime is 1228679016839. The next prime is 1228679016847. The reversal of 1228679016840 is 486109768221.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1228679016847) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 438342879 + ... + 438345681.

It is an arithmetic number, because the mean of its divisors is an integer number (7908489225).

Almost surely, 2^{1228679016840} is an apocalyptic number.

1228679016840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228679016840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2277644896800).

1228679016840 is an abundant number, since it is smaller than the sum of its proper divisors (3326610776760).

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

1228679016840 is a wasteful number, since it uses less digits than its factorization.

1228679016840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3218 (or 3200 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 1228679016840 in words is "one trillion, two hundred twenty-eight billion, six hundred seventy-nine million, sixteen thousand, eight hundred forty".