1228636718750 has 200 divisors, whose sum is σ = 2707997769576. Its totient is φ = 418031250000.

The previous prime is 1228636718741. The next prime is 1228636718753. The reversal of 1228636718750 is 578176368221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228636718753) by changing a digit.

It is a polite number, since it can be written in 99 ways as a sum of consecutive naturals, for example, 9378906185 + ... + 9378906315.

Almost surely, 2^{1228636718750} is an apocalyptic number.

1228636718750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1228636718750 is an abundant number, since it is smaller than the sum of its proper divisors (1479361050826).

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

1228636718750 is an frugal number, since it uses more digits than its factorization.

1228636718750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 1228636718750 in words is "one trillion, two hundred twenty-eight billion, six hundred thirty-six million, seven hundred eighteen thousand, seven hundred fifty".