660061016554 has 8 divisors (see below), whose sum is σ = 990289123488. Its totient is φ = 329964642060.

The previous prime is 660061016551. The next prime is 660061016597. The reversal of 660061016554 is 455610160066.

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

It is not an unprimeable number, because it can be changed into a prime (660061016551) by changing a digit.

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, 32920582 + ... + 32940625.

It is an arithmetic number, because the mean of its divisors is an integer number (123786140436).

Almost surely, 2^660061016554 is an apocalyptic number.

660061016554 is a deficient number, since it is larger than the sum of its proper divisors (330228106934).

660061016554 is a wasteful number, since it uses less digits than its factorization.

660061016554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65866220.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 660061016554 in words is "six hundred sixty billion, sixty-one million, sixteen thousand, five hundred fifty-four".