1228336642624 has 112 divisors (see below), whose sum is σ = 3004443234688. Its totient is φ = 485211783168.

The previous prime is 1228336642613. The next prime is 1228336642651. The reversal of 1228336642624 is 4262466338221.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×1228336642624² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3762859 + ... + 4076245.

It is an arithmetic number, because the mean of its divisors is an integer number (26825386024).

Almost surely, 2^{1228336642624} is an apocalyptic number.

1228336642624 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 1228336642624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1502221617344).

1228336642624 is an abundant number, since it is smaller than the sum of its proper divisors (1776106592064).

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

1228336642624 is a wasteful number, since it uses less digits than its factorization.

1228336642624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314092 (or 314082 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 49.

The spelling of 1228336642624 in words is "one trillion, two hundred twenty-eight billion, three hundred thirty-six million, six hundred forty-two thousand, six hundred twenty-four".