1228886836464 has 160 divisors (see below), whose sum is σ = 3661552153600. Its totient is φ = 347892019200.

The previous prime is 1228886836459. The next prime is 1228886836493. The reversal of 1228886836464 is 4646386888221.

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1228886836395 and 1228886836404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16076094 + ... + 16152354.

It is an arithmetic number, because the mean of its divisors is an integer number (22884700960).

Almost surely, 2^{1228886836464} is an apocalyptic number.

1228886836464 is a gapful number since it is divisible by the number (14) 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 1228886836464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1830776076800).

1228886836464 is an abundant number, since it is smaller than the sum of its proper divisors (2432665317136).

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

1228886836464 is a wasteful number, since it uses less digits than its factorization.

1228886836464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76719 (or 76713 counting only the distinct ones).

The product of its digits is 169869312, while the sum is 66.

The spelling of 1228886836464 in words is "one trillion, two hundred twenty-eight billion, eight hundred eighty-six million, eight hundred thirty-six thousand, four hundred sixty-four".