655352746189920 has 216 divisors, whose sum is σ = 2322288307566864. Its totient is φ = 174760732037376.

The previous prime is 655352746189787. The next prime is 655352746189951. The reversal of 655352746189920 is 29981647253556.

655352746189920 is a `hidden beast` number, since 6 + 5 + 5 + 3 + 52 + 7 + 461 + 8 + 99 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (72).

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 35 ways as a sum of consecutive naturals, for example, 311094324 + ... + 313193843.

It is an arithmetic number, because the mean of its divisors is an integer number (10751334757254).

It is a 1-persistent number, because it is pandigital, but 2⋅655352746189920 = 1310705492379840 is not.

Almost surely, 2^{655352746189920} is an apocalyptic number.

655352746189920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

655352746189920 is an abundant number, since it is smaller than the sum of its proper divisors (1666935561376944).

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

655352746189920 is an frugal number, since it uses more digits than its factorization.

655352746189920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624288206 (or 624288177 counting only the distinct ones).

The product of its (nonzero) digits is 979776000, while the sum is 72.

The spelling of 655352746189920 in words is "six hundred fifty-five trillion, three hundred fifty-two billion, seven hundred forty-six million, one hundred eighty-nine thousand, nine hundred twenty".