21430286791086 has 64 divisors (see below), whose sum is σ = 46852906346496. Its totient is φ = 6505349760000.

The previous prime is 21430286791079. The next prime is 21430286791087. The reversal of 21430286791086 is 68019768203412.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21430286791087) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20203461 + ... + 21237711.

It is an arithmetic number, because the mean of its divisors is an integer number (732076661664).

Almost surely, 2^{21430286791086} is an apocalyptic number.

21430286791086 is an abundant number, since it is smaller than the sum of its proper divisors (25422619555410).

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

21430286791086 is a wasteful number, since it uses less digits than its factorization.

21430286791086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040857.

The product of its (nonzero) digits is 6967296, while the sum is 57.

The spelling of 21430286791086 in words is "twenty-one trillion, four hundred thirty billion, two hundred eighty-six million, seven hundred ninety-one thousand, eighty-six".