21484861434786 has 16 divisors (see below), whose sum is σ = 43349985905184. Its totient is φ = 7098243305664.

The previous prime is 21484861434779. The next prime is 21484861434821. The reversal of 21484861434786 is 68743416848412.

It is a happy 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, 15844292416 + ... + 15844293771.

It is an arithmetic number, because the mean of its divisors is an integer number (2709374119074).

Almost surely, 2^{21484861434786} is an apocalyptic number.

21484861434786 is an abundant number, since it is smaller than the sum of its proper divisors (21865124470398).

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

21484861434786 is a wasteful number, since it uses less digits than its factorization.

21484861434786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31688586305.

The product of its digits is 198180864, while the sum is 66.

The spelling of 21484861434786 in words is "twenty-one trillion, four hundred eighty-four billion, eight hundred sixty-one million, four hundred thirty-four thousand, seven hundred eighty-six".