2481666856 has 8 divisors (see below), whose sum is σ = 4653125370. Its totient is φ = 1240833424.

The previous prime is 2481666829. The next prime is 2481666871. The reversal of 2481666856 is 6586661842.

It can be written as a sum of positive squares in only one way, i.e., 1963376100 + 518290756 = 44310^2 + 22766^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155104171 + ... + 155104186.

Almost surely, 2^2481666856 is an apocalyptic number.

It is an amenable number.

2481666856 is a deficient number, since it is larger than the sum of its proper divisors (2171458514).

2481666856 is a wasteful number, since it uses less digits than its factorization.

2481666856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310208363 (or 310208359 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 52.

The square root of 2481666856 is about 49816.3312177844. The cubic root of 2481666856 is about 1353.8830782530.

The spelling of 2481666856 in words is "two billion, four hundred eighty-one million, six hundred sixty-six thousand, eight hundred fifty-six".