20534549760 has 432 divisors, whose sum is σ = 74487905856. Its totient is φ = 5415911424.

The previous prime is 20534549759. The next prime is 20534549771. The reversal of 20534549760 is 6794543502.

20534549760 is a `hidden beast` number, since 2 + 0 + 5 + 34 + 549 + 76 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (432).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33280972 + ... + 33281588.

It is an arithmetic number, because the mean of its divisors is an integer number (172425708).

Almost surely, 2^20534549760 is an apocalyptic number.

20534549760 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 20534549760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37243952928).

20534549760 is an abundant number, since it is smaller than the sum of its proper divisors (53953356096).

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

20534549760 is an equidigital number, since it uses as much as digits as its factorization.

20534549760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 734 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 20534549760 in words is "twenty billion, five hundred thirty-four million, five hundred forty-nine thousand, seven hundred sixty".