6478163880 has 32 divisors (see below), whose sum is σ = 19434492000. Its totient is φ = 1727510336.

The previous prime is 6478163873. The next prime is 6478163897. The reversal of 6478163880 is 883618746.

It is a super-2 number, since 2×6478163880² = 83933214512273308800, which contains 22 as substring.

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, 26992230 + ... + 26992469.

It is an arithmetic number, because the mean of its divisors is an integer number (607327875).

Almost surely, 2^6478163880 is an apocalyptic number.

6478163880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6478163880 is an abundant number, since it is smaller than the sum of its proper divisors (12956328120).

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

6478163880 is a wasteful number, since it uses less digits than its factorization.

6478163880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53984713 (or 53984709 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The square root of 6478163880 is about 80487.0416899516. The cubic root of 6478163880 is about 1864.1633989211.

The spelling of 6478163880 in words is "six billion, four hundred seventy-eight million, one hundred sixty-three thousand, eight hundred eighty".