21486025776068 has 24 divisors (see below), whose sum is σ = 43782844980672. Its totient is φ = 9034555312224.

The previous prime is 21486025776041. The next prime is 21486025776109. The reversal of 21486025776068 is 86067752068412.

It is a self number, because there is not a number n which added to its sum of digits gives 21486025776068.

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, 7239225530 + ... + 7239228497.

It is an arithmetic number, because the mean of its divisors is an integer number (1824285207528).

Almost surely, 2^{21486025776068} is an apocalyptic number.

21486025776068 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21486025776068 is an abundant number, since it is smaller than the sum of its proper divisors (22296819204604).

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

21486025776068 is a wasteful number, since it uses less digits than its factorization.

21486025776068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14478454091 (or 14478454089 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 62.

The spelling of 21486025776068 in words is "twenty-one trillion, four hundred eighty-six billion, twenty-five million, seven hundred seventy-six thousand, sixty-eight".