655913404800 has 144 divisors (see below), whose sum is σ = 2340449444580. Its totient is φ = 174910233600.

The previous prime is 655913404789. The next prime is 655913404801. The reversal of 655913404800 is 8404319556.

655913404800 is a `hidden beast` number, since 6 + 55 + 91 + 34 + 0 + 480 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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 (655913404801) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 11358586 + ... + 11416185.

Almost surely, 2^655913404800 is an apocalyptic number.

655913404800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655913404800 is an abundant number, since it is smaller than the sum of its proper divisors (1684536039780).

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

655913404800 is a wasteful number, since it uses less digits than its factorization.

655913404800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22774801 (or 22774781 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 655913404800 in words is "six hundred fifty-five billion, nine hundred thirteen million, four hundred four thousand, eight hundred".