660016551701 has 24 divisors (see below), whose sum is σ = 722154840120. Its totient is φ = 599646278016.

The previous prime is 660016551613. The next prime is 660016551713. The reversal of 660016551701 is 107155610066.

It can be written as a sum of positive squares in 4 ways, for example, as 1364194225 + 658652357476 = 36935^2 + 811574^2 .

It is a de Polignac number, because none of the positive numbers 2^k-660016551701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660016551721) 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 23 ways as a sum of consecutive naturals, for example, 24077135 + ... + 24104531.

It is an arithmetic number, because the mean of its divisors is an integer number (30089785005).

Almost surely, 2^660016551701 is an apocalyptic number.

It is an amenable number.

660016551701 is a deficient number, since it is larger than the sum of its proper divisors (62138288419).

660016551701 is a wasteful number, since it uses less digits than its factorization.

660016551701 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27845 (or 27762 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 38.

The spelling of 660016551701 in words is "six hundred sixty billion, sixteen million, five hundred fifty-one thousand, seven hundred one".