21062317068 has 72 divisors (see below), whose sum is σ = 59829221088. Its totient is φ = 6198939648.

The previous prime is 21062317051. The next prime is 21062317069. The reversal of 21062317068 is 86071326012.

21062317068 is a `hidden beast` number, since 2 + 10 + 623 + 17 + 0 + 6 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21062317069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 967605 + ... + 989132.

It is an arithmetic number, because the mean of its divisors is an integer number (830961404).

Almost surely, 2^21062317068 is an apocalyptic number.

It is an amenable number.

21062317068 is an abundant number, since it is smaller than the sum of its proper divisors (38766904020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21062317068 is a wasteful number, since it uses less digits than its factorization.

21062317068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956783 (or 1956778 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The spelling of 21062317068 in words is "twenty-one billion, sixty-two million, three hundred seventeen thousand, sixty-eight".