66453011 has 4 divisors (see below), whose sum is σ = 66489024. Its totient is φ = 66417000.

The previous prime is 66452993. The next prime is 66453019. The reversal of 66453011 is 11035466.

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 66453011 - 2¹⁸ = 66190867 is a prime.

It is a super-2 number, since 2×66453011² = 8832005341932242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66453019) 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, 15080 + ... + 18981.

It is an arithmetic number, because the mean of its divisors is an integer number (16622256).

Almost surely, 2^66453011 is an apocalyptic number.

66453011 is a deficient number, since it is larger than the sum of its proper divisors (36013).

66453011 is a wasteful number, since it uses less digits than its factorization.

66453011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36012.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 66453011 is about 8151.8716255839. The cubic root of 66453011 is about 405.0465038304.

Adding to 66453011 its reverse (11035466), we get a palindrome (77488477).

The spelling of 66453011 in words is "sixty-six million, four hundred fifty-three thousand, eleven".