6015661209 has 8 divisors (see below), whose sum is σ = 8912090720. Its totient is φ = 4010440788.

The previous prime is 6015661199. The next prime is 6015661237. The reversal of 6015661209 is 9021665106.

It is not a de Polignac number, because 6015661209 - 2¹¹ = 6015659161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6015661609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111401107 + ... + 111401160.

It is an arithmetic number, because the mean of its divisors is an integer number (1114011340).

Almost surely, 2^6015661209 is an apocalyptic number.

It is an amenable number.

6015661209 is a deficient number, since it is larger than the sum of its proper divisors (2896429511).

6015661209 is a wasteful number, since it uses less digits than its factorization.

6015661209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222802276 (or 222802270 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 6015661209 is about 77560.6937114412. The cubic root of 6015661209 is about 1818.7002361982.

The spelling of 6015661209 in words is "six billion, fifteen million, six hundred sixty-one thousand, two hundred nine".