667777327040 has 112 divisors (see below), whose sum is σ = 1635308083200. Its totient is φ = 259586933760.

The previous prime is 667777327027. The next prime is 667777327051. The reversal of 667777327040 is 40723777766.

It is a super-3 number, since 3×667777327040³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2616305 + ... + 2860175.

Almost surely, 2^667777327040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667777327040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (817654041600).

667777327040 is an abundant number, since it is smaller than the sum of its proper divisors (967530756160).

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

667777327040 is a wasteful number, since it uses less digits than its factorization.

667777327040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244130 (or 244120 counting only the distinct ones).

The product of its (nonzero) digits is 14521248, while the sum is 56.

The spelling of 667777327040 in words is "six hundred sixty-seven billion, seven hundred seventy-seven million, three hundred twenty-seven thousand, forty".