6477955856 has 40 divisors (see below), whose sum is σ = 13164574080. Its totient is φ = 3084372864.

The previous prime is 6477955837. The next prime is 6477955879. The reversal of 6477955856 is 6585597746.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88586 + ... + 144233.

It is an arithmetic number, because the mean of its divisors is an integer number (329114352).

Almost surely, 2^6477955856 is an apocalyptic number.

It is an amenable number.

6477955856 is an abundant number, since it is smaller than the sum of its proper divisors (6686618224).

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

6477955856 is a wasteful number, since it uses less digits than its factorization.

6477955856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232911 (or 232905 counting only the distinct ones).

The product of its digits is 63504000, while the sum is 62.

The square root of 6477955856 is about 80485.7493970206. The cubic root of 6477955856 is about 1864.1434449710.

The spelling of 6477955856 in words is "six billion, four hundred seventy-seven million, nine hundred fifty-five thousand, eight hundred fifty-six".