6544057380 has 96 divisors (see below), whose sum is σ = 20955454464. Its totient is φ = 1494751104.

The previous prime is 6544057363. The next prime is 6544057417. The reversal of 6544057380 is 837504456.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 719139 + ... + 728181.

It is an arithmetic number, because the mean of its divisors is an integer number (218285984).

Almost surely, 2^6544057380 is an apocalyptic number.

6544057380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6544057380 is an abundant number, since it is smaller than the sum of its proper divisors (14411397084).

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

6544057380 is a wasteful number, since it uses less digits than its factorization.

6544057380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10785 (or 10783 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 42.

The square root of 6544057380 is about 80895.3483211488. The cubic root of 6544057380 is about 1870.4626172971.

The spelling of 6544057380 in words is "six billion, five hundred forty-four million, fifty-seven thousand, three hundred eighty".