662040166651 has 4 divisors (see below), whose sum is σ = 665400776832. Its totient is φ = 658679556472.

The previous prime is 662040166603. The next prime is 662040166657. The reversal of 662040166651 is 156661040266.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156661040266 = 2 ⋅78330520133.

It is a cyclic number.

It is not a de Polignac number, because 662040166651 - 2⁷ = 662040166523 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 662040166598 and 662040166607.

It is not an unprimeable number, because it can be changed into a prime (662040166657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680304795 + ... + 1680305188.

It is an arithmetic number, because the mean of its divisors is an integer number (166350194208).

Almost surely, 2^662040166651 is an apocalyptic number.

662040166651 is a deficient number, since it is larger than the sum of its proper divisors (3360610181).

662040166651 is a wasteful number, since it uses less digits than its factorization.

662040166651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3360610180.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 662040166651 in words is "six hundred sixty-two billion, forty million, one hundred sixty-six thousand, six hundred fifty-one".