6651266023 has 4 divisors (see below), whose sum is σ = 6651444888. Its totient is φ = 6651087160.

The previous prime is 6651266021. The next prime is 6651266033. The reversal of 6651266023 is 3206621566.

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

It is a cyclic number.

It is not a de Polignac number, because 6651266023 - 2¹ = 6651266021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6651266021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10333 + ... + 115798.

It is an arithmetic number, because the mean of its divisors is an integer number (1662861222).

Almost surely, 2^6651266023 is an apocalyptic number.

6651266023 is a deficient number, since it is larger than the sum of its proper divisors (178865).

6651266023 is a wasteful number, since it uses less digits than its factorization.

6651266023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178864.

The product of its (nonzero) digits is 77760, while the sum is 37.

The square root of 6651266023 is about 81555.2942671412. The cubic root of 6651266023 is about 1880.6216842980.

Adding to 6651266023 its reverse (3206621566), we get a palindrome (9857887589).

The spelling of 6651266023 in words is "six billion, six hundred fifty-one million, two hundred sixty-six thousand, twenty-three".