6278655561 has 8 divisors (see below), whose sum is σ = 8371923264. Its totient is φ = 4185579120.

The previous prime is 6278655557. The next prime is 6278655571. The reversal of 6278655561 is 1655568726.

It is a happy number.

6278655561 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6278655561 - 2² = 6278655557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6278655511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70875 + ... + 132591.

It is an arithmetic number, because the mean of its divisors is an integer number (1046490408).

Almost surely, 2^6278655561 is an apocalyptic number.

It is an amenable number.

6278655561 is a deficient number, since it is larger than the sum of its proper divisors (2093267703).

6278655561 is a wasteful number, since it uses less digits than its factorization.

6278655561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95631.

The product of its digits is 3024000, while the sum is 51.

The square root of 6278655561 is about 79237.9679257362. The cubic root of 6278655561 is about 1844.8266042493.

The spelling of 6278655561 in words is "six billion, two hundred seventy-eight million, six hundred fifty-five thousand, five hundred sixty-one".