21150805162 has 16 divisors (see below), whose sum is σ = 31786662600. Its totient is φ = 10555269120.

The previous prime is 21150805141. The next prime is 21150805189. The reversal of 21150805162 is 26150805112.

It can be written as a sum of positive squares in 4 ways, for example, as 20779510801 + 371294361 = 144151^2 + 19269^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3505164 + ... + 3511192.

Almost surely, 2^21150805162 is an apocalyptic number.

21150805162 is a deficient number, since it is larger than the sum of its proper divisors (10635857438).

21150805162 is a wasteful number, since it uses less digits than its factorization.

21150805162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081.

The product of its (nonzero) digits is 4800, while the sum is 31.

The spelling of 21150805162 in words is "twenty-one billion, one hundred fifty million, eight hundred five thousand, one hundred sixty-two".