653663205660 has 192 divisors, whose sum is σ = 1996037406720. Its totient is φ = 159404528640.

The previous prime is 653663205659. The next prime is 653663205703. The reversal of 653663205660 is 66502366356.

It is a super-4 number, since 4×653663205660⁴ (a number of 48 digits) contains 4444 as substring.

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 63 ways as a sum of consecutive naturals, for example, 2406262 + ... + 2664098.

It is an arithmetic number, because the mean of its divisors is an integer number (10396028160).

Almost surely, 2^653663205660 is an apocalyptic number.

653663205660 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 653663205660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (998018703360).

653663205660 is an abundant number, since it is smaller than the sum of its proper divisors (1342374201060).

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

653663205660 is a wasteful number, since it uses less digits than its factorization.

653663205660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257956 (or 257954 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 48.

The spelling of 653663205660 in words is "six hundred fifty-three billion, six hundred sixty-three million, two hundred five thousand, six hundred sixty".