6181138560 has 64 divisors (see below), whose sum is σ = 19702385280. Its totient is φ = 1648303104.

The previous prime is 6181138549. The next prime is 6181138591. The reversal of 6181138560 is 658311816.

It is a tau number, because it is divible by the number of its divisors (64).

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, 1607752 + ... + 1611591.

It is an arithmetic number, because the mean of its divisors is an integer number (307849770).

Almost surely, 2^6181138560 is an apocalyptic number.

6181138560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6181138560 is an abundant number, since it is smaller than the sum of its proper divisors (13521246720).

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

6181138560 is a wasteful number, since it uses less digits than its factorization.

6181138560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219365 (or 3219353 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 6181138560 is about 78620.2172472196. The cubic root of 6181138560 is about 1835.2257451808.

The spelling of 6181138560 in words is "six billion, one hundred eighty-one million, one hundred thirty-eight thousand, five hundred sixty".