21795058086 has 16 divisors (see below), whose sum is σ = 43596012864. Its totient is φ = 7264036584.

The previous prime is 21795058067. The next prime is 21795058091. The reversal of 21795058086 is 68085059712.

It is a super-2 number, since 2×21795058086² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 196900 + ... + 286983.

It is an arithmetic number, because the mean of its divisors is an integer number (2724750804).

Almost surely, 2^21795058086 is an apocalyptic number.

21795058086 is an abundant number, since it is smaller than the sum of its proper divisors (21800954778).

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

21795058086 is a wasteful number, since it uses less digits than its factorization.

21795058086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491395.

The product of its (nonzero) digits is 1209600, while the sum is 51.

The spelling of 21795058086 in words is "twenty-one billion, seven hundred ninety-five million, fifty-eight thousand, eighty-six".