1228769877504 has 640 divisors, whose sum is σ = 3857673093120. Its totient is φ = 344184422400.

The previous prime is 1228769877457. The next prime is 1228769877563. The reversal of 1228769877504 is 4057789678221.

It is a super-2 number, since 2×1228769877504² (a number of 25 digits) contains 22 as substring.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2246379759 + ... + 2246380305.

It is an arithmetic number, because the mean of its divisors is an integer number (6027614208).

Almost surely, 2^{1228769877504} 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 1228769877504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928836546560).

1228769877504 is an abundant number, since it is smaller than the sum of its proper divisors (2628903215616).

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

1228769877504 is a wasteful number, since it uses less digits than its factorization.

1228769877504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822 (or 806 counting only the distinct ones).

The product of its (nonzero) digits is 94832640, while the sum is 66.

The spelling of 1228769877504 in words is "one trillion, two hundred twenty-eight billion, seven hundred sixty-nine million, eight hundred seventy-seven thousand, five hundred four".