2861098515540 has 288 divisors, whose sum is σ = 8975039673600. Its totient is φ = 737322227712.

The previous prime is 2861098515511. The next prime is 2861098515551. The reversal of 2861098515540 is 455158901682.

2861098515540 is a `hidden beast` number, since 2 + 8 + 6 + 1 + 0 + 9 + 85 + 1 + 554 + 0 = 666.

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 95 ways as a sum of consecutive naturals, for example, 303302664 + ... + 303312096.

It is an arithmetic number, because the mean of its divisors is an integer number (31163332200).

Almost surely, 2^{2861098515540} is an apocalyptic number.

2861098515540 is a gapful number since it is divisible by the number (20) 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 2861098515540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4487519836800).

2861098515540 is an abundant number, since it is smaller than the sum of its proper divisors (6113941158060).

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

2861098515540 is a wasteful number, since it uses less digits than its factorization.

2861098515540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9903 (or 9898 counting only the distinct ones).

The product of its (nonzero) digits is 3456000, while the sum is 54.

The spelling of 2861098515540 in words is "two trillion, eight hundred sixty-one billion, ninety-eight million, five hundred fifteen thousand, five hundred forty".