667651258384 has 20 divisors (see below), whose sum is σ = 1411171978320. Its totient is φ = 303477844640.

The previous prime is 667651258367. The next prime is 667651258387. The reversal of 667651258384 is 483852156766.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (667651258387) 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 3 ways as a sum of consecutive naturals, for example, 1896736354 + ... + 1896736705.

It is an arithmetic number, because the mean of its divisors is an integer number (70558598916).

Almost surely, 2^667651258384 is an apocalyptic number.

It is an amenable number.

667651258384 is an abundant number, since it is smaller than the sum of its proper divisors (743520719936).

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

667651258384 is a wasteful number, since it uses less digits than its factorization.

667651258384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3793473078 (or 3793473072 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 61.

The spelling of 667651258384 in words is "six hundred sixty-seven billion, six hundred fifty-one million, two hundred fifty-eight thousand, three hundred eighty-four".