655737696768 has 960 divisors, whose sum is σ = 2307212328960. Its totient is φ = 161796096000.

The previous prime is 655737696767. The next prime is 655737696787. The reversal of 655737696768 is 867696737556.

It is a self number, because there is not a number n which added to its sum of digits gives 655737696768.

It is not an unprimeable number, because it can be changed into a prime (655737696767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2863483278 + ... + 2863483506.

It is an arithmetic number, because the mean of its divisors is an integer number (2403346176).

Almost surely, 2^655737696768 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 655737696768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1153606164480).

655737696768 is an abundant number, since it is smaller than the sum of its proper divisors (1651474632192).

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

655737696768 is a wasteful number, since it uses less digits than its factorization.

655737696768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381 (or 354 counting only the distinct ones).

The product of its digits is 2400451200, while the sum is 75.

The spelling of 655737696768 in words is "six hundred fifty-five billion, seven hundred thirty-seven million, six hundred ninety-six thousand, seven hundred sixty-eight".