21062057162 has 4 divisors (see below), whose sum is σ = 31593085746. Its totient is φ = 10531028580.

The previous prime is 21062057143. The next prime is 21062057167. The reversal of 21062057162 is 26175026012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17729188801 + 3332868361 = 133151^2 + 57731^2 .

It is a super-2 number, since 2×21062057162² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21062057167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5265514289 + ... + 5265514292.

Almost surely, 2^21062057162 is an apocalyptic number.

21062057162 is a deficient number, since it is larger than the sum of its proper divisors (10531028584).

21062057162 is a wasteful number, since it uses less digits than its factorization.

21062057162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10531028583.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 21062057162 in words is "twenty-one billion, sixty-two million, fifty-seven thousand, one hundred sixty-two".