655572917760 has 640 divisors, whose sum is σ = 2199515472000. Its totient is φ = 166440468480.

The previous prime is 655572917759. The next prime is 655572917761. The reversal of 655572917760 is 67719275556.

It is an interprime number because it is at equal distance from previous prime (655572917759) and next prime (655572917761).

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 655572917694 and 655572917703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655572917761) 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, 4175623602 + ... + 4175623758.

It is an arithmetic number, because the mean of its divisors is an integer number (3436742925).

Almost surely, 2^655572917760 is an apocalyptic number.

655572917760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655572917760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1099757736000).

655572917760 is an abundant number, since it is smaller than the sum of its proper divisors (1543942554240).

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

655572917760 is a wasteful number, since it uses less digits than its factorization.

655572917760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 446 counting only the distinct ones).

The product of its (nonzero) digits is 27783000, while the sum is 60.

The spelling of 655572917760 in words is "six hundred fifty-five billion, five hundred seventy-two million, nine hundred seventeen thousand, seven hundred sixty".