655712601648 has 160 divisors (see below), whose sum is σ = 1884358060032. Its totient is φ = 195116083200.

The previous prime is 655712601647. The next prime is 655712601667. The reversal of 655712601648 is 846106217556.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 655712601648.

It is not an unprimeable number, because it can be changed into a prime (655712601647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30378636 + ... + 30400212.

Almost surely, 2^655712601648 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 655712601648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942179030016).

655712601648 is an abundant number, since it is smaller than the sum of its proper divisors (1228645458384).

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

655712601648 is a wasteful number, since it uses less digits than its factorization.

655712601648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23203 (or 23197 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 655712601648 in words is "six hundred fifty-five billion, seven hundred twelve million, six hundred one thousand, six hundred forty-eight".