6115720720 has 40 divisors (see below), whose sum is σ = 14565864600. Its totient is φ = 2386621440.

The previous prime is 6115720657. The next prime is 6115720739. The reversal of 6115720720 is 270275116.

It can be written as a sum of positive squares in 4 ways, for example, as 1731856 + 6113988864 = 1316^2 + 78192^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 928995 + ... + 935554.

It is an arithmetic number, because the mean of its divisors is an integer number (364146615).

Almost surely, 2^6115720720 is an apocalyptic number.

It is an amenable number.

6115720720 is an abundant number, since it is smaller than the sum of its proper divisors (8450143880).

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

6115720720 is a wasteful number, since it uses less digits than its factorization.

6115720720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864603 (or 1864597 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 6115720720 is about 78203.0735968862. The cubic root of 6115720720 is about 1828.7284227884.

Adding to 6115720720 its reverse (270275116), we get a palindrome (6385995836).

The spelling of 6115720720 in words is "six billion, one hundred fifteen million, seven hundred twenty thousand, seven hundred twenty".