21928036914576 has 120 divisors (see below), whose sum is σ = 66314227060536. Its totient is φ = 6724060508160.

The previous prime is 21928036914533. The next prime is 21928036914587. The reversal of 21928036914576 is 67541963082912.

21928036914576 is a `hidden beast` number, since 2 + 1 + 9 + 28 + 0 + 36 + 9 + 1 + 4 + 576 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3143614104576 + 18784422810000 = 1773024^2 + 4334100^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19440745 + ... + 20537736.

It is a 2-persistent number, because it is pandigital, and so is 2⋅21928036914576 = 43856073829152, but 3⋅21928036914576 = 65784110743728 is not.

Almost surely, 2^{21928036914576} is an apocalyptic number.

21928036914576 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

21928036914576 is an abundant number, since it is smaller than the sum of its proper divisors (44386190145960).

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

21928036914576 is a wasteful number, since it uses less digits than its factorization.

21928036914576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39978801 (or 39978792 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 21928036914576 in words is "twenty-one trillion, nine hundred twenty-eight billion, thirty-six million, nine hundred fourteen thousand, five hundred seventy-six".