20734747545600 has 2496 divisors, whose sum is σ = 88749655372800. Its totient is φ = 4751297740800.

The previous prime is 20734747545583. The next prime is 20734747545601. The reversal of 20734747545600 is 654574743702.

20734747545600 is a `hidden beast` number, since 2 + 0 + 7 + 3 + 4 + 7 + 4 + 75 + 4 + 560 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (20734747545601) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 46805298979 + ... + 46805299421.

Almost surely, 2^{20734747545600} is an apocalyptic number.

20734747545600 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 20734747545600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44374827686400).

20734747545600 is an abundant number, since it is smaller than the sum of its proper divisors (68014907827200).

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

20734747545600 is an equidigital number, since it uses as much as digits as its factorization.

20734747545600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 19756800, while the sum is 54.

The spelling of 20734747545600 in words is "twenty trillion, seven hundred thirty-four billion, seven hundred forty-seven million, five hundred forty-five thousand, six hundred".