6544801940 has 48 divisors (see below), whose sum is σ = 14476324800. Its totient is φ = 2478615552.

The previous prime is 6544801931. The next prime is 6544801993. The reversal of 6544801940 is 491084456.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 762191 + ... + 770729.

It is an arithmetic number, because the mean of its divisors is an integer number (301590100).

Almost surely, 2^6544801940 is an apocalyptic number.

It is an amenable number.

6544801940 is an abundant number, since it is smaller than the sum of its proper divisors (7931522860).

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

6544801940 is a wasteful number, since it uses less digits than its factorization.

6544801940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10584 (or 10582 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The square root of 6544801940 is about 80899.9501853988. The cubic root of 6544801940 is about 1870.5335528421.

The spelling of 6544801940 in words is "six billion, five hundred forty-four million, eight hundred one thousand, nine hundred forty".