18577983464820 has 96 divisors (see below), whose sum is σ = 62244183939840. Its totient is φ = 4573042081920.

The previous prime is 18577983464749. The next prime is 18577983464947. The reversal of 18577983464820 is 2846438977581.

It is a happy number.

18577983464820 is a `hidden beast` number, since 1 + 8 + 5 + 7 + 7 + 9 + 83 + 464 + 82 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1323211176 + ... + 1323225215.

It is an arithmetic number, because the mean of its divisors is an integer number (648376916040).

It is a 1-persistent number, because it is pandigital, but 2⋅18577983464820 = 37155966929640 is not.

Almost surely, 2^{18577983464820} is an apocalyptic number.

18577983464820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18577983464820 is an abundant number, since it is smaller than the sum of its proper divisors (43666200475020).

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

18577983464820 is a wasteful number, since it uses less digits than its factorization.

18577983464820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646436422 (or 2646436414 counting only the distinct ones).

The product of its (nonzero) digits is 650280960, while the sum is 72.

The spelling of 18577983464820 in words is "eighteen trillion, five hundred seventy-seven billion, nine hundred eighty-three million, four hundred sixty-four thousand, eight hundred twenty".