655254061605 has 192 divisors, whose sum is σ = 1417717147392. Its totient is φ = 275054469120.

The previous prime is 655254061603. The next prime is 655254061661. The reversal of 655254061605 is 506160452556.

655254061605 is a `hidden beast` number, since 6 + 5 + 5 + 25 + 4 + 0 + 616 + 0 + 5 = 666.

It is not a de Polignac number, because 655254061605 - 2¹ = 655254061603 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655254061601) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 32042514 + ... + 32062956.

It is an arithmetic number, because the mean of its divisors is an integer number (7383943476).

Almost surely, 2^655254061605 is an apocalyptic number.

655254061605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

655254061605 is an abundant number, since it is smaller than the sum of its proper divisors (762463085787).

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

655254061605 is a wasteful number, since it uses less digits than its factorization.

655254061605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20788 (or 20785 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 655254061605 in words is "six hundred fifty-five billion, two hundred fifty-four million, sixty-one thousand, six hundred five".