653994880000 has 880 divisors, whose sum is σ = 2129017296384. Its totient is φ = 194641920000.

The previous prime is 653994879947. The next prime is 653994880039. The reversal of 653994880000 is 88499356.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (880).

It is a self number, because there is not a number n which added to its sum of digits gives 653994880000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1133439712 + ... + 1133440288.

Almost surely, 2^653994880000 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 653994880000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1064508648192).

653994880000 is an abundant number, since it is smaller than the sum of its proper divisors (1475022416384).

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

653994880000 is a wasteful number, since it uses less digits than its factorization.

653994880000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 653994880000 in words is "six hundred fifty-three billion, nine hundred ninety-four million, eight hundred eighty thousand".