21010528000015 has 8 divisors (see below), whose sum is σ = 25558012142928. Its totient is φ = 16578170038080.

The previous prime is 21010528000009. The next prime is 21010528000037. The reversal of 21010528000015 is 51000082501012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21010528000015 - 2¹¹ = 21010527997967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28781544841 + ... + 28781545570.

It is an arithmetic number, because the mean of its divisors is an integer number (3194751517866).

Almost surely, 2^{21010528000015} is an apocalyptic number.

21010528000015 is a deficient number, since it is larger than the sum of its proper divisors (4547484142913).

21010528000015 is an equidigital number, since it uses as much as digits as its factorization.

21010528000015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57563090489.

The product of its (nonzero) digits is 800, while the sum is 25.

The spelling of 21010528000015 in words is "twenty-one trillion, ten billion, five hundred twenty-eight million, fifteen", and thus it is an aban number.