1285951102800 has 960 divisors, whose sum is σ = 5228332032000. Its totient is φ = 262945751040.

The previous prime is 1285951102783. The next prime is 1285951102859. The reversal of 1285951102800 is 82011595821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 643296201 + ... + 643298199.

It is an arithmetic number, because the mean of its divisors is an integer number (5446179200).

Almost surely, 2^{1285951102800} is an apocalyptic number.

1285951102800 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 1285951102800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2614166016000).

1285951102800 is an abundant number, since it is smaller than the sum of its proper divisors (3942380929200).

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

1285951102800 is a wasteful number, since it uses less digits than its factorization.

1285951102800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 42.

The spelling of 1285951102800 in words is "one trillion, two hundred eighty-five billion, nine hundred fifty-one million, one hundred two thousand, eight hundred".