21035160066 has 16 divisors (see below), whose sum is σ = 42106508064. Its totient is φ = 7005688704.

The previous prime is 21035160037. The next prime is 21035160073. The reversal of 21035160066 is 66006153012.

It is a super-2 number, since 2×21035160066² (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 7 ways as a sum of consecutive naturals, for example, 1500271 + ... + 1514226.

It is an arithmetic number, because the mean of its divisors is an integer number (2631656754).

Almost surely, 2^21035160066 is an apocalyptic number.

21035160066 is an abundant number, since it is smaller than the sum of its proper divisors (21071347998).

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

21035160066 is a wasteful number, since it uses less digits than its factorization.

21035160066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3015665.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 21035160066 in words is "twenty-one billion, thirty-five million, one hundred sixty thousand, sixty-six".