6601016505501 has 24 divisors (see below), whose sum is σ = 10544089473216. Its totient is φ = 3945813099840.

The previous prime is 6601016505451. The next prime is 6601016505527. The reversal of 6601016505501 is 1055056101066.

It is not a de Polignac number, because 6601016505501 - 2¹⁵ = 6601016472733 is a prime.

It is a super-2 number, since 2×6601016505501² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6601016505701) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 456684105 + ... + 456698558.

It is an arithmetic number, because the mean of its divisors is an integer number (439337061384).

Almost surely, 2^{6601016505501} is an apocalyptic number.

It is an amenable number.

6601016505501 is a deficient number, since it is larger than the sum of its proper divisors (3943072967715).

6601016505501 is a wasteful number, since it uses less digits than its factorization.

6601016505501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913382753 (or 913382750 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 36.

The spelling of 6601016505501 in words is "six trillion, six hundred one billion, sixteen million, five hundred five thousand, five hundred one".