21471061401306 has 96 divisors (see below), whose sum is σ = 51204356461440. Its totient is φ = 6448348828800.

The previous prime is 21471061401277. The next prime is 21471061401311. The reversal of 21471061401306 is 60310416017412.

21471061401306 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 1 + 0 + 614 + 0 + 1 + 30 + 6 = 666.

It is a super-2 number, since 2×21471061401306² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9478155 + ... + 11522913.

It is an arithmetic number, because the mean of its divisors is an integer number (533378713140).

Almost surely, 2^{21471061401306} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21471061401306, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25602178230720).

21471061401306 is an abundant number, since it is smaller than the sum of its proper divisors (29733295060134).

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

21471061401306 is a wasteful number, since it uses less digits than its factorization.

21471061401306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2045252 (or 2045249 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

Adding to 21471061401306 its reverse (60310416017412), we get a palindrome (81781477418718).

The spelling of 21471061401306 in words is "twenty-one trillion, four hundred seventy-one billion, sixty-one million, four hundred one thousand, three hundred six".