6617349721144 has 8 divisors (see below), whose sum is σ = 12407530727160. Its totient is φ = 3308674860568.

The previous prime is 6617349721123. The next prime is 6617349721153. The reversal of 6617349721144 is 4411279437166.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 413584357564 + ... + 413584357579.

It is an arithmetic number, because the mean of its divisors is an integer number (1550941340895).

Almost surely, 2^{6617349721144} is an apocalyptic number.

It is an amenable number.

6617349721144 is a deficient number, since it is larger than the sum of its proper divisors (5790181006016).

6617349721144 is a wasteful number, since it uses less digits than its factorization.

6617349721144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827168715149 (or 827168715145 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 55.

The spelling of 6617349721144 in words is "six trillion, six hundred seventeen billion, three hundred forty-nine million, seven hundred twenty-one thousand, one hundred forty-four".