7664534549523 has 6 divisors (see below), whose sum is σ = 11070994349324. Its totient is φ = 5109689699676.

The previous prime is 7664534549479. The next prime is 7664534549537. The reversal of 7664534549523 is 3259454354667.

7664534549523 is a `hidden beast` number, since 7 + 6 + 6 + 4 + 5 + 34 + 549 + 52 + 3 = 666.

It is not a de Polignac number, because 7664534549523 - 2¹² = 7664534545427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7664534549543) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 425807474965 + ... + 425807474982.

Almost surely, 2^{7664534549523} is an apocalyptic number.

7664534549523 is a deficient number, since it is larger than the sum of its proper divisors (3406459799801).

7664534549523 is a wasteful number, since it uses less digits than its factorization.

7664534549523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851614949953 (or 851614949950 counting only the distinct ones).

The product of its digits is 326592000, while the sum is 63.

The spelling of 7664534549523 in words is "seven trillion, six hundred sixty-four billion, five hundred thirty-four million, five hundred forty-nine thousand, five hundred twenty-three".