667455352171696 has 320 divisors, whose sum is σ = 1534665475123200. Its totient is φ = 278299271577600.

The previous prime is 667455352171669. The next prime is 667455352171697. The reversal of 667455352171696 is 696171253554766.

It is a Harshad number since it is a multiple of its sum of digits (73).

It is not an unprimeable number, because it can be changed into a prime (667455352171697) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1206548955 + ... + 1207102021.

It is an arithmetic number, because the mean of its divisors is an integer number (4795829609760).

Almost surely, 2^{667455352171696} 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 667455352171696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767332737561600).

667455352171696 is an abundant number, since it is smaller than the sum of its proper divisors (867210122951504).

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

667455352171696 is a wasteful number, since it uses less digits than its factorization.

667455352171696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553308 (or 553302 counting only the distinct ones).

The product of its digits is 1714608000, while the sum is 73.

The spelling of 667455352171696 in words is "six hundred sixty-seven trillion, four hundred fifty-five billion, three hundred fifty-two million, one hundred seventy-one thousand, six hundred ninety-six".