654612061824 has 192 divisors, whose sum is σ = 2279453192640. Its totient is φ = 176030097408.

The previous prime is 654612061811. The next prime is 654612061877. The reversal of 654612061824 is 428160216456.

It is a happy number.

654612061824 is a `hidden beast` number, since 6 + 5 + 4 + 6 + 1 + 2 + 0 + 618 + 24 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

It is a self number, because there is not a number n which added to its sum of digits gives 654612061824.

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 23 ways as a sum of consecutive naturals, for example, 2250474 + ... + 2524649.

It is an arithmetic number, because the mean of its divisors is an integer number (11872152045).

Almost surely, 2^654612061824 is an apocalyptic number.

654612061824 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

654612061824 is an abundant number, since it is smaller than the sum of its proper divisors (1624841130816).

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

654612061824 is a wasteful number, since it uses less digits than its factorization.

654612061824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4775167 (or 4775152 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 45.

The spelling of 654612061824 in words is "six hundred fifty-four billion, six hundred twelve million, sixty-one thousand, eight hundred twenty-four".