667765242140 has 48 divisors (see below), whose sum is σ = 1527013101600. Its totient is φ = 244322088192.

The previous prime is 667765242119. The next prime is 667765242143. The reversal of 667765242140 is 41242567766.

It is a super-3 number, since 3×667765242140³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667765242143) 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 15 ways as a sum of consecutive naturals, for example, 30286859 + ... + 30308898.

It is an arithmetic number, because the mean of its divisors is an integer number (31812772950).

Almost surely, 2^667765242140 is an apocalyptic number.

It is an amenable number.

667765242140 is an abundant number, since it is smaller than the sum of its proper divisors (859247859460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667765242140 is a wasteful number, since it uses less digits than its factorization.

667765242140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60595814 (or 60595812 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 50.

The spelling of 667765242140 in words is "six hundred sixty-seven billion, seven hundred sixty-five million, two hundred forty-two thousand, one hundred forty".