6545149123928 has 8 divisors (see below), whose sum is σ = 12272154607380. Its totient is φ = 3272574561960.

The previous prime is 6545149123913. The next prime is 6545149123937. The reversal of 6545149123928 is 8293219415456.

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

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, 409071820238 + ... + 409071820253.

Almost surely, 2^{6545149123928} is an apocalyptic number.

It is an amenable number.

6545149123928 is a deficient number, since it is larger than the sum of its proper divisors (5727005483452).

6545149123928 is a wasteful number, since it uses less digits than its factorization.

6545149123928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818143640497 (or 818143640493 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 59.

The spelling of 6545149123928 in words is "six trillion, five hundred forty-five billion, one hundred forty-nine million, one hundred twenty-three thousand, nine hundred twenty-eight".