6601240615140 has 72 divisors (see below), whose sum is σ = 20043530547768. Its totient is φ = 1758593041920.

The previous prime is 6601240615093. The next prime is 6601240615169. The reversal of 6601240615140 is 415160421066.

6601240615140 is a `hidden beast` number, since 6 + 6 + 0 + 1 + 24 + 0 + 615 + 14 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 86464226304 + 6514776388836 = 294048^2 + 2552406^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6601240615095 and 6601240615104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17919121 + ... + 18283800.

It is an arithmetic number, because the mean of its divisors is an integer number (278382368719).

Almost surely, 2^{6601240615140} is an apocalyptic number.

6601240615140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6601240615140 is an abundant number, since it is smaller than the sum of its proper divisors (13442289932628).

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

6601240615140 is a wasteful number, since it uses less digits than its factorization.

6601240615140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36203949 (or 36203944 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 6601240615140 in words is "six trillion, six hundred one billion, two hundred forty million, six hundred fifteen thousand, one hundred forty".