6116721580 has 24 divisors (see below), whose sum is σ = 12878152560. Its totient is φ = 2440395840.

The previous prime is 6116721521. The next prime is 6116721599. The reversal of 6116721580 is 851276116.

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 7 ways as a sum of consecutive naturals, for example, 385326 + ... + 400885.

It is an arithmetic number, because the mean of its divisors is an integer number (536589690).

Almost surely, 2^6116721580 is an apocalyptic number.

It is an amenable number.

6116721580 is an abundant number, since it is smaller than the sum of its proper divisors (6761430980).

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

6116721580 is a wasteful number, since it uses less digits than its factorization.

6116721580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786609 (or 786607 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 6116721580 is about 78209.4724441995. The cubic root of 6116721580 is about 1828.8281767055.

Adding to 6116721580 its reverse (851276116), we get a palindrome (6967997696).

The spelling of 6116721580 in words is "six billion, one hundred sixteen million, seven hundred twenty-one thousand, five hundred eighty".