21010528000038 has 32 divisors (see below), whose sum is σ = 42613343447040. Its totient is φ = 6904796803520.

The previous prime is 21010528000037. The next prime is 21010528000043. The reversal of 21010528000038 is 83000082501012.

It is a junction number, because it is equal to n+sod(n) for n = 21010527999969 and 21010528000014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010528000037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54813706 + ... + 55195682.

It is an arithmetic number, because the mean of its divisors is an integer number (1331666982720).

Almost surely, 2^{21010528000038} is an apocalyptic number.

21010528000038 is an abundant number, since it is smaller than the sum of its proper divisors (21602815447002).

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

21010528000038 is a wasteful number, since it uses less digits than its factorization.

21010528000038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511172.

The product of its (nonzero) digits is 3840, while the sum is 30.

The spelling of 21010528000038 in words is "twenty-one trillion, ten billion, five hundred twenty-eight million, thirty-eight", and thus it is an aban number.