667960888320 has 2112 divisors, whose sum is σ = 2893265827200. Its totient is φ = 147149291520.

The previous prime is 667960888277. The next prime is 667960888391. The reversal of 667960888320 is 23888069766.

It is a tau number, because it is divible by the number of its divisors (2112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 23033134066 + ... + 23033134094.

Almost surely, 2^667960888320 is an apocalyptic number.

667960888320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 667960888320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1446632913600).

667960888320 is an abundant number, since it is smaller than the sum of its proper divisors (2225304938880).

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

667960888320 is a wasteful number, since it uses less digits than its factorization.

667960888320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 41803776, while the sum is 63.

The spelling of 667960888320 in words is "six hundred sixty-seven billion, nine hundred sixty million, eight hundred eighty-eight thousand, three hundred twenty".