21962000164 has 48 divisors (see below), whose sum is σ = 42545672176. Its totient is φ = 9853747200.

The previous prime is 21962000131. The next prime is 21962000173. The reversal of 21962000164 is 46100026912.

It can be written as a sum of positive squares in 8 ways, for example, as 10614564 + 21951385600 = 3258^2 + 148160^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2537284 + ... + 2545924.

Almost surely, 2^21962000164 is an apocalyptic number.

It is an amenable number.

21962000164 is a deficient number, since it is larger than the sum of its proper divisors (20583672012).

21962000164 is a wasteful number, since it uses less digits than its factorization.

21962000164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10016 (or 10014 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The spelling of 21962000164 in words is "twenty-one billion, nine hundred sixty-two million, one hundred sixty-four", and thus it is an aban number.