655765433280 has 112 divisors (see below), whose sum is σ = 2313394753440. Its totient is φ = 174870779904.

The previous prime is 655765433261. The next prime is 655765433291. The reversal of 655765433280 is 82334567556.

655765433280 is a `hidden beast` number, since 6 + 5 + 5 + 76 + 543 + 3 + 28 + 0 = 666.

It is a super-2 number, since 2×655765433280² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37940749 + ... + 37958028.

Almost surely, 2^655765433280 is an apocalyptic number.

655765433280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655765433280 is an abundant number, since it is smaller than the sum of its proper divisors (1657629320160).

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

655765433280 is a wasteful number, since it uses less digits than its factorization.

655765433280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75898803 (or 75898787 counting only the distinct ones).

The product of its (nonzero) digits is 18144000, while the sum is 54.

The spelling of 655765433280 in words is "six hundred fifty-five billion, seven hundred sixty-five million, four hundred thirty-three thousand, two hundred eighty".