21214425366534 has 64 divisors (see below), whose sum is σ = 45037058821632. Its totient is φ = 6638874816000.

The previous prime is 21214425366487. The next prime is 21214425366623. The reversal of 21214425366534 is 43566352441212.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69206764 + ... + 69512624.

It is an arithmetic number, because the mean of its divisors is an integer number (703704044088).

Almost surely, 2^{21214425366534} is an apocalyptic number.

21214425366534 is an abundant number, since it is smaller than the sum of its proper divisors (23822633455098).

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

21214425366534 is a wasteful number, since it uses less digits than its factorization.

21214425366534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307581.

The product of its digits is 4147200, while the sum is 48.

The spelling of 21214425366534 in words is "twenty-one trillion, two hundred fourteen billion, four hundred twenty-five million, three hundred sixty-six thousand, five hundred thirty-four".