20712443673920 has 112 divisors (see below), whose sum is σ = 50932605523968. Its totient is φ = 8014557511680.

The previous prime is 20712443673899. The next prime is 20712443673967. The reversal of 20712443673920 is 2937634421702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24816032 + ... + 25637088.

It is an arithmetic number, because the mean of its divisors is an integer number (454755406464).

Almost surely, 2^{20712443673920} is an apocalyptic number.

20712443673920 is a gapful number since it is divisible by the number (20) 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 20712443673920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25466302761984).

20712443673920 is an abundant number, since it is smaller than the sum of its proper divisors (30220161850048).

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

20712443673920 is a wasteful number, since it uses less digits than its factorization.

20712443673920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823648 (or 823638 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 50.

The spelling of 20712443673920 in words is "twenty trillion, seven hundred twelve billion, four hundred forty-three million, six hundred seventy-three thousand, nine hundred twenty".