21006062162 has 8 divisors (see below), whose sum is σ = 31521122892. Its totient is φ = 10499021200.

The previous prime is 21006062149. The next prime is 21006062243. The reversal of 21006062162 is 26126060012.

It can be written as a sum of positive squares in 2 ways, for example, as 20900774041 + 105288121 = 144571^2 + 10261^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21006062162² (a number of 21 digits) contains 22 as substring.

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, 1998389 + ... + 2008872.

Almost surely, 2^21006062162 is an apocalyptic number.

21006062162 is a deficient number, since it is larger than the sum of its proper divisors (10515060730).

21006062162 is a wasteful number, since it uses less digits than its factorization.

21006062162 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009884.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 21006062162 in words is "twenty-one billion, six million, sixty-two thousand, one hundred sixty-two".