6615461601 has 12 divisors (see below), whose sum is σ = 10920762112. Its totient is φ = 3780263736.

The previous prime is 6615461599. The next prime is 6615461621. The reversal of 6615461601 is 1061645166.

It is a happy number.

6615461601 is a `hidden beast` number, since 6 + 6 + 1 + 5 + 46 + 1 + 601 = 666.

It is not a de Polignac number, because 6615461601 - 2¹ = 6615461599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6615461621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52503601 + ... + 52503726.

Almost surely, 2^6615461601 is an apocalyptic number.

It is an amenable number.

6615461601 is a deficient number, since it is larger than the sum of its proper divisors (4305300511).

6615461601 is a wasteful number, since it uses less digits than its factorization.

6615461601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105007340 (or 105007337 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 6615461601 is about 81335.4879557503. The cubic root of 6615461601 is about 1877.2410868952.

The spelling of 6615461601 in words is "six billion, six hundred fifteen million, four hundred sixty-one thousand, six hundred one".