6611603506464 has 48 divisors (see below), whose sum is σ = 18933228226080. Its totient is φ = 2003516213760.

The previous prime is 6611603506447. The next prime is 6611603506489. The reversal of 6611603506464 is 4646053061166.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 3130493029 + ... + 3130495140.

It is an arithmetic number, because the mean of its divisors is an integer number (394442254710).

Almost surely, 2^{6611603506464} is an apocalyptic number.

It is an amenable number.

6611603506464 is an abundant number, since it is smaller than the sum of its proper divisors (12321624719616).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6611603506464 is a wasteful number, since it uses less digits than its factorization.

6611603506464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6260988193 (or 6260988185 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 6611603506464 in words is "six trillion, six hundred eleven billion, six hundred three million, five hundred six thousand, four hundred sixty-four".