21080188866086 has 16 divisors (see below), whose sum is σ = 36475199963136. Its totient is φ = 8949933323016.

The previous prime is 21080188866071. The next prime is 21080188866101. The reversal of 21080188866086 is 68066888108012.

It is an interprime number because it is at equal distance from previous prime (21080188866071) and next prime (21080188866101).

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, 7036109606 + ... + 7036112601.

It is an arithmetic number, because the mean of its divisors is an integer number (2279699997696).

Almost surely, 2^{21080188866086} is an apocalyptic number.

21080188866086 is a deficient number, since it is larger than the sum of its proper divisors (15395011097050).

21080188866086 is a wasteful number, since it uses less digits than its factorization.

21080188866086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14072222323.

The product of its (nonzero) digits is 14155776, while the sum is 62.

The spelling of 21080188866086 in words is "twenty-one trillion, eighty billion, one hundred eighty-eight million, eight hundred sixty-six thousand, eighty-six".