2148780652860 has 48 divisors (see below), whose sum is σ = 6179196262176. Its totient is φ = 557521466112.

The previous prime is 2148780652859. The next prime is 2148780652867. The reversal of 2148780652860 is 682560878412.

It is a self number, because there is not a number n which added to its sum of digits gives 2148780652860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148780652867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 483957387 + ... + 483961826.

It is an arithmetic number, because the mean of its divisors is an integer number (128733255462).

Almost surely, 2^{2148780652860} is an apocalyptic number.

2148780652860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2148780652860 is an abundant number, since it is smaller than the sum of its proper divisors (4030415609316).

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

2148780652860 is a wasteful number, since it uses less digits than its factorization.

2148780652860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 967919262 (or 967919260 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 57.

The spelling of 2148780652860 in words is "two trillion, one hundred forty-eight billion, seven hundred eighty million, six hundred fifty-two thousand, eight hundred sixty".