21167020058 has 16 divisors (see below), whose sum is σ = 32010612480. Its totient is φ = 10497168336.

The previous prime is 21167020057. The next prime is 21167020073. The reversal of 21167020058 is 85002076112.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21167020057) 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 7 ways as a sum of consecutive naturals, for example, 32591 + ... + 208317.

It is an arithmetic number, because the mean of its divisors is an integer number (2000663280).

Almost surely, 2^21167020058 is an apocalyptic number.

21167020058 is a deficient number, since it is larger than the sum of its proper divisors (10843592422).

21167020058 is a wasteful number, since it uses less digits than its factorization.

21167020058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176221.

The product of its (nonzero) digits is 6720, while the sum is 32.

The spelling of 21167020058 in words is "twenty-one billion, one hundred sixty-seven million, twenty thousand, fifty-eight".