659540648144 has 80 divisors (see below), whose sum is σ = 1497448347648. Its totient is φ = 275518889856.

The previous prime is 659540648131. The next prime is 659540648191. The reversal of 659540648144 is 441846045956.

659540648144 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×659540648144² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 659540648144.

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, 2204789 + ... + 2485995.

Almost surely, 2^659540648144 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 659540648144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (748724173824).

659540648144 is an abundant number, since it is smaller than the sum of its proper divisors (837907699504).

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

659540648144 is a wasteful number, since it uses less digits than its factorization.

659540648144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281752 (or 281746 counting only the distinct ones).

The product of its (nonzero) digits is 16588800, while the sum is 56.

The spelling of 659540648144 in words is "six hundred fifty-nine billion, five hundred forty million, six hundred forty-eight thousand, one hundred forty-four".