6600551001605 has 16 divisors (see below), whose sum is σ = 8642240568000. Its totient is φ = 4799556696960.

The previous prime is 6600551001601. The next prime is 6600551001617. The reversal of 6600551001605 is 5061001550066.

It is not a de Polignac number, because 6600551001605 - 2² = 6600551001601 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6600551001601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10234655 + ... + 10860444.

It is an arithmetic number, because the mean of its divisors is an integer number (540140035500).

Almost surely, 2^{6600551001605} is an apocalyptic number.

It is an amenable number.

6600551001605 is a deficient number, since it is larger than the sum of its proper divisors (2041689566395).

6600551001605 is a wasteful number, since it uses less digits than its factorization.

6600551001605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21100804.

The product of its (nonzero) digits is 27000, while the sum is 35.

The spelling of 6600551001605 in words is "six trillion, six hundred billion, five hundred fifty-one million, one thousand, six hundred five".