18576728980992 has 640 divisors, whose sum is σ = 68787800632320. Its totient is φ = 4819019857920.

The previous prime is 18576728980981. The next prime is 18576728981009. The reversal of 18576728980992 is 29908982767581.

18576728980992 is a `hidden beast` number, since 18 + 576 + 7 + 28 + 9 + 8 + 0 + 9 + 9 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 76615983 + ... + 76858065.

It is an arithmetic number, because the mean of its divisors is an integer number (107480938488).

Almost surely, 2^{18576728980992} is an apocalyptic number.

18576728980992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18576728980992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34393900316160).

18576728980992 is an abundant number, since it is smaller than the sum of its proper divisors (50211071651328).

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

18576728980992 is a wasteful number, since it uses less digits than its factorization.

18576728980992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242191 (or 242169 counting only the distinct ones).

The product of its (nonzero) digits is 2194698240, while the sum is 81.

The spelling of 18576728980992 in words is "eighteen trillion, five hundred seventy-six billion, seven hundred twenty-eight million, nine hundred eighty thousand, nine hundred ninety-two".