20825940739680 has 72 divisors (see below), whose sum is σ = 71068522779072. Its totient is φ = 5553584196864.

The previous prime is 20825940739663. The next prime is 20825940739691. The reversal of 20825940739680 is 8693704952802.

20825940739680 is a `hidden beast` number, since 2 + 0 + 8 + 2 + 594 + 0 + 7 + 39 + 6 + 8 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7231227984 + ... + 7231230863.

It is an arithmetic number, because the mean of its divisors is an integer number (987062816376).

Almost surely, 2^{20825940739680} is an apocalyptic number.

20825940739680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20825940739680 is an abundant number, since it is smaller than the sum of its proper divisors (50242582039392).

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

20825940739680 is a wasteful number, since it uses less digits than its factorization.

20825940739680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14462458868 (or 14462458857 counting only the distinct ones).

The product of its (nonzero) digits is 52254720, while the sum is 63.

The spelling of 20825940739680 in words is "twenty trillion, eight hundred twenty-five billion, nine hundred forty million, seven hundred thirty-nine thousand, six hundred eighty".