1287127680200 has 96 divisors (see below), whose sum is σ = 3074159807400. Its totient is φ = 500820848640.

The previous prime is 1287127680169. The next prime is 1287127680229. The reversal of 1287127680200 is 20867217821.

It can be written as a sum of positive squares in 12 ways, for example, as 724408658884 + 562719021316 = 851122^2 + 750146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36664256 + ... + 36699344.

Almost surely, 2^{1287127680200} is an apocalyptic number.

1287127680200 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 1287127680200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1537079903700).

1287127680200 is an abundant number, since it is smaller than the sum of its proper divisors (1787032127200).

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

1287127680200 is a wasteful number, since it uses less digits than its factorization.

1287127680200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40099 (or 40090 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 44.

The spelling of 1287127680200 in words is "one trillion, two hundred eighty-seven billion, one hundred twenty-seven million, six hundred eighty thousand, two hundred".