655554290688 has 440 divisors, whose sum is σ = 2140776574464. Its totient is φ = 198169804800.

The previous prime is 655554290687. The next prime is 655554290719. The reversal of 655554290688 is 886092455556.

655554290688 is a `hidden beast` number, since 6 + 5 + 5 + 5 + 542 + 9 + 0 + 6 + 88 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (655554290687) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 603085281 + ... + 603086367.

Almost surely, 2^655554290688 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 655554290688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1070388287232).

655554290688 is an abundant number, since it is smaller than the sum of its proper divisors (1485222283776).

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

655554290688 is a wasteful number, since it uses less digits than its factorization.

655554290688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791 (or 1764 counting only the distinct ones).

The product of its (nonzero) digits is 103680000, while the sum is 63.

The spelling of 655554290688 in words is "six hundred fifty-five billion, five hundred fifty-four million, two hundred ninety thousand, six hundred eighty-eight".