20934055783872 has 336 divisors, whose sum is σ = 76831689172992. Its totient is φ = 5290459453440.

The previous prime is 20934055783871. The next prime is 20934055783877. The reversal of 20934055783872 is 27838755043902.

20934055783872 is a `hidden beast` number, since 2 + 0 + 9 + 3 + 4 + 0 + 557 + 8 + 3 + 8 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20934055783871) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4737328 + ... + 8019375.

Almost surely, 2^{20934055783872} is an apocalyptic number.

20934055783872 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20934055783872 is an abundant number, since it is smaller than the sum of its proper divisors (55897633389120).

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

20934055783872 is a wasteful number, since it uses less digits than its factorization.

20934055783872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12756776 (or 12756763 counting only the distinct ones).

The product of its (nonzero) digits is 101606400, while the sum is 63.

The spelling of 20934055783872 in words is "twenty trillion, nine hundred thirty-four billion, fifty-five million, seven hundred eighty-three thousand, eight hundred seventy-two".