6489761040 has 160 divisors (see below), whose sum is σ = 25547055360. Its totient is φ = 1483370496.

The previous prime is 6489761023. The next prime is 6489761051. The reversal of 6489761040 is 401679846.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199489 + ... + 229728.

It is an arithmetic number, because the mean of its divisors is an integer number (159669096).

Almost surely, 2^6489761040 is an apocalyptic number.

6489761040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6489761040 is an abundant number, since it is smaller than the sum of its proper divisors (19057294320).

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

6489761040 is a wasteful number, since it uses less digits than its factorization.

6489761040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429246 (or 429234 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 6489761040 is about 80559.0531225386. The cubic root of 6489761040 is about 1865.2751395159.

The spelling of 6489761040 in words is "six billion, four hundred eighty-nine million, seven hundred sixty-one thousand, forty".