21160134215409 has 64 divisors (see below), whose sum is σ = 34511304199680. Its totient is φ = 11257060147200.

The previous prime is 21160134215401. The next prime is 21160134215447. The reversal of 21160134215409 is 90451243106112.

It is not a de Polignac number, because 21160134215409 - 2³ = 21160134215401 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21160134215401) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 22934317 + ... + 23839109.

It is an arithmetic number, because the mean of its divisors is an integer number (539239128120).

Almost surely, 2^{21160134215409} is an apocalyptic number.

It is an amenable number.

21160134215409 is a deficient number, since it is larger than the sum of its proper divisors (13351169984271).

21160134215409 is a wasteful number, since it uses less digits than its factorization.

21160134215409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905530.

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 21160134215409 in words is "twenty-one trillion, one hundred sixty billion, one hundred thirty-four million, two hundred fifteen thousand, four hundred nine".