20751828048 has 400 divisors, whose sum is σ = 71592846336. Its totient is φ = 5678346240.

The previous prime is 20751828037. The next prime is 20751828121. The reversal of 20751828048 is 84082815702.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20751827994 and 20751828012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 31778890 + ... + 31779542.

Almost surely, 2^20751828048 is an apocalyptic number.

20751828048 is a gapful number since it is divisible by the number (28) 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 20751828048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35796423168).

20751828048 is an abundant number, since it is smaller than the sum of its proper divisors (50841018288).

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

20751828048 is a wasteful number, since it uses less digits than its factorization.

20751828048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 809 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The spelling of 20751828048 in words is "twenty billion, seven hundred fifty-one million, eight hundred twenty-eight thousand, forty-eight".