1002778141860 has 1152 divisors, whose sum is σ = 3760114176000. Its totient is φ = 223556889600.

The previous prime is 1002778141793. The next prime is 1002778141861. The reversal of 1002778141860 is 681418772001.

1002778141860 is a `hidden beast` number, since 100 + 2 + 7 + 78 + 1 + 418 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (1002778141861) by changing a digit.

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 383 ways as a sum of consecutive naturals, for example, 5039086041 + ... + 5039086239.

It is an arithmetic number, because the mean of its divisors is an integer number (3263988000).

Almost surely, 2^{1002778141860} is an apocalyptic number.

1002778141860 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 1002778141860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1880057088000).

1002778141860 is an abundant number, since it is smaller than the sum of its proper divisors (2757336034140).

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

1002778141860 is a wasteful number, since it uses less digits than its factorization.

1002778141860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The spelling of 1002778141860 in words is "one trillion, two billion, seven hundred seventy-eight million, one hundred forty-one thousand, eight hundred sixty".