21354050525200 has 30 divisors (see below), whose sum is σ = 51303106387754. Its totient is φ = 8541620209920.

The previous prime is 21354050525117. The next prime is 21354050525219. The reversal of 21354050525200 is 252505045312.

It can be written as a sum of positive squares in 3 ways, for example, as 5318318597904 + 16035731927296 = 2306148^2 + 4004464^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26692562757 + ... + 26692563556.

Almost surely, 2^{21354050525200} is an apocalyptic number.

21354050525200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21354050525200 is an abundant number, since it is smaller than the sum of its proper divisors (29949055862554).

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

21354050525200 is a wasteful number, since it uses less digits than its factorization.

21354050525200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53385126331 (or 53385126320 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 34.

The spelling of 21354050525200 in words is "twenty-one trillion, three hundred fifty-four billion, fifty million, five hundred twenty-five thousand, two hundred".