20524544040 has 1536 divisors, whose sum is σ = 96322867200. Its totient is φ = 3357573120.

The previous prime is 20524544039. The next prime is 20524544087. The reversal of 20524544040 is 4044542502.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 20524543989 and 20524544007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 892371469 + ... + 892371491.

It is an arithmetic number, because the mean of its divisors is an integer number (62710200).

Almost surely, 2^20524544040 is an apocalyptic number.

20524544040 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 20524544040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48161433600).

20524544040 is an abundant number, since it is smaller than the sum of its proper divisors (75798323160).

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

20524544040 is a wasteful number, since it uses less digits than its factorization.

20524544040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The spelling of 20524544040 in words is "twenty billion, five hundred twenty-four million, five hundred forty-four thousand, forty".