21316034041405 has 16 divisors (see below), whose sum is σ = 27177157039680. Its totient is φ = 16004325796992.

The previous prime is 21316034041403. The next prime is 21316034041417. The reversal of 21316034041405 is 50414043061312.

It is a cyclic number.

It is not a de Polignac number, because 21316034041405 - 2¹ = 21316034041403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21316034041403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1048491264 + ... + 1048511593.

It is an arithmetic number, because the mean of its divisors is an integer number (1698572314980).

Almost surely, 2^{21316034041405} is an apocalyptic number.

It is an amenable number.

21316034041405 is a deficient number, since it is larger than the sum of its proper divisors (5861122998275).

21316034041405 is a wasteful number, since it uses less digits than its factorization.

21316034041405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2097002988.

The product of its (nonzero) digits is 34560, while the sum is 34.

The spelling of 21316034041405 in words is "twenty-one trillion, three hundred sixteen billion, thirty-four million, forty-one thousand, four hundred five".