6840144156 has 48 divisors (see below), whose sum is σ = 16660998144. Its totient is φ = 2180033856.

The previous prime is 6840144121. The next prime is 6840144161. The reversal of 6840144156 is 6514410486.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1224586 + ... + 1230158.

It is an arithmetic number, because the mean of its divisors is an integer number (347104128).

Almost surely, 2^6840144156 is an apocalyptic number.

It is an amenable number.

6840144156 is an abundant number, since it is smaller than the sum of its proper divisors (9820853988).

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

6840144156 is a wasteful number, since it uses less digits than its factorization.

6840144156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10050 (or 10048 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 39.

The square root of 6840144156 is about 82705.1640225687. The cubic root of 6840144156 is about 1898.2573269537.

The spelling of 6840144156 in words is "six billion, eight hundred forty million, one hundred forty-four thousand, one hundred fifty-six".