66232456961 has 4 divisors (see below), whose sum is σ = 72253589424. Its totient is φ = 60211324500.

The previous prime is 66232456937. The next prime is 66232456973. The reversal of 66232456961 is 16965423266.

66232456961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66232456961 - 2¹⁸ = 66232194817 is a prime.

It is a super-3 number, since 3×66232456961³ (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66232456981) 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, 3010566215 + ... + 3010566236.

It is an arithmetic number, because the mean of its divisors is an integer number (18063397356).

Almost surely, 2^66232456961 is an apocalyptic number.

It is an amenable number.

66232456961 is a deficient number, since it is larger than the sum of its proper divisors (6021132463).

66232456961 is a wasteful number, since it uses less digits than its factorization.

66232456961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6021132462.

The product of its digits is 2799360, while the sum is 50.

The spelling of 66232456961 in words is "sixty-six billion, two hundred thirty-two million, four hundred fifty-six thousand, nine hundred sixty-one".