21867200552 has 16 divisors (see below), whose sum is σ = 41171133300. Its totient is φ = 10888231680.

The previous prime is 21867200497. The next prime is 21867200591. The reversal of 21867200552 is 25500276812.

It can be written as a sum of positive squares in 2 ways, for example, as 18935411236 + 2931789316 = 137606^2 + 54146^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5669027 + ... + 5672882.

Almost surely, 2^21867200552 is an apocalyptic number.

It is an amenable number.

21867200552 is a deficient number, since it is larger than the sum of its proper divisors (19303932748).

21867200552 is a wasteful number, since it uses less digits than its factorization.

21867200552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11342156 (or 11342152 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 38.

The spelling of 21867200552 in words is "twenty-one billion, eight hundred sixty-seven million, two hundred thousand, five hundred fifty-two".