6601436516 has 24 divisors (see below), whose sum is σ = 11767676760. Its totient is φ = 3239785472.

The previous prime is 6601436503. The next prime is 6601436533. The reversal of 6601436516 is 6156341066.

It can be written as a sum of positive squares in 4 ways, for example, as 855796516 + 5745640000 = 29254^2 + 75800^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6601436516.

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, 18905 + ... + 116448.

It is an arithmetic number, because the mean of its divisors is an integer number (490319865).

Almost surely, 2^6601436516 is an apocalyptic number.

It is an amenable number.

6601436516 is a deficient number, since it is larger than the sum of its proper divisors (5166240244).

6601436516 is a wasteful number, since it uses less digits than its factorization.

6601436516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135583 (or 135581 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 6601436516 is about 81249.2247101472. The cubic root of 6601436516 is about 1875.9135356121.

The spelling of 6601436516 in words is "six billion, six hundred one million, four hundred thirty-six thousand, five hundred sixteen".