660451885053 has 8 divisors (see below), whose sum is σ = 882645676416. Its totient is φ = 439279675200.

The previous prime is 660451884979. The next prime is 660451885061. The reversal of 660451885053 is 350588154066.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 660451885053 - 2⁹ = 660451884541 is a prime.

It is a super-2 number, since 2×660451885053² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 660451884987 and 660451885005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660451885153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255393868 + ... + 255396453.

It is an arithmetic number, because the mean of its divisors is an integer number (110330709552).

Almost surely, 2^660451885053 is an apocalyptic number.

It is an amenable number.

660451885053 is a deficient number, since it is larger than the sum of its proper divisors (222193791363).

660451885053 is a wasteful number, since it uses less digits than its factorization.

660451885053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510790755.

The product of its (nonzero) digits is 3456000, while the sum is 51.

The spelling of 660451885053 in words is "six hundred sixty billion, four hundred fifty-one million, eight hundred eighty-five thousand, fifty-three".