6651324523 has 4 divisors (see below), whose sum is σ = 6653984368. Its totient is φ = 6648664680.

The previous prime is 6651324479. The next prime is 6651324541. The reversal of 6651324523 is 3254231566.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6651324523 is a prime.

It is a super-2 number, since 2×6651324523² = 88480235820522355058, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6651324583) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1326168 + ... + 1331173.

It is an arithmetic number, because the mean of its divisors is an integer number (1663496092).

Almost surely, 2^6651324523 is an apocalyptic number.

6651324523 is a deficient number, since it is larger than the sum of its proper divisors (2659845).

6651324523 is a wasteful number, since it uses less digits than its factorization.

6651324523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659844.

The product of its digits is 129600, while the sum is 37.

The square root of 6651324523 is about 81555.6529187278. The cubic root of 6651324523 is about 1880.6271978371.

The spelling of 6651324523 in words is "six billion, six hundred fifty-one million, three hundred twenty-four thousand, five hundred twenty-three".