689122340668416 has 176 divisors, whose sum is σ = 1841776645966400. Its totient is φ = 229080456364032.

The previous prime is 689122340668409. The next prime is 689122340668439. The reversal of 689122340668416 is 614866043221986.

It is a happy 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, 17800779876 + ... + 17800818588.

It is an arithmetic number, because the mean of its divisors is an integer number (10464640033900).

Almost surely, 2^{689122340668416} 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 689122340668416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (920888322983200).

689122340668416 is an abundant number, since it is smaller than the sum of its proper divisors (1152654305297984).

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

689122340668416 is a wasteful number, since it uses less digits than its factorization.

689122340668416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54404 (or 54386 counting only the distinct ones).

The product of its (nonzero) digits is 143327232, while the sum is 66.

The spelling of 689122340668416 in words is "six hundred eighty-nine trillion, one hundred twenty-two billion, three hundred forty million, six hundred sixty-eight thousand, four hundred sixteen".