21434240501415 has 24 divisors (see below), whose sum is σ = 42460209755808. Its totient is φ = 9798509943360.

The previous prime is 21434240501351. The next prime is 21434240501461. The reversal of 21434240501415 is 51410504243412.

21434240501415 is a `hidden beast` number, since 2 + 1 + 43 + 424 + 0 + 50 + 141 + 5 = 666.

It is not a de Polignac number, because 21434240501415 - 2⁶ = 21434240501351 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21434240501415.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 34022603656 + ... + 34022604285.

It is an arithmetic number, because the mean of its divisors is an integer number (1769175406492).

Almost surely, 2^{21434240501415} is an apocalyptic number.

21434240501415 is a deficient number, since it is larger than the sum of its proper divisors (21025969254393).

21434240501415 is a wasteful number, since it uses less digits than its factorization.

21434240501415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68045207959 (or 68045207956 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 21434240501415 its reverse (51410504243412), we get a palindrome (72844744744827).

The spelling of 21434240501415 in words is "twenty-one trillion, four hundred thirty-four billion, two hundred forty million, five hundred one thousand, four hundred fifteen".