660663025054 has 8 divisors (see below), whose sum is σ = 995360152968. Its totient is φ = 328876307400.

The previous prime is 660663025049. The next prime is 660663025103. The reversal of 660663025054 is 450520366066.

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

It is a super-3 number, since 3×660663025054³ (a number of 36 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 660663025054.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 727601997 + ... + 727602904.

It is an arithmetic number, because the mean of its divisors is an integer number (124420019121).

Almost surely, 2^660663025054 is an apocalyptic number.

660663025054 is a deficient number, since it is larger than the sum of its proper divisors (334697127914).

660663025054 is a wasteful number, since it uses less digits than its factorization.

660663025054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1455205130.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 660663025054 in words is "six hundred sixty billion, six hundred sixty-three million, twenty-five thousand, fifty-four".