21160521316446 has 16 divisors (see below), whose sum is σ = 44548465929600. Its totient is φ = 6682269889368.

The previous prime is 21160521316439. The next prime is 21160521316457. The reversal of 21160521316446 is 64461312506112.

It is a junction number, because it is equal to n+sod(n) for n = 21160521316398 and 21160521316407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92809303906 + ... + 92809304133.

It is an arithmetic number, because the mean of its divisors is an integer number (2784279120600).

Almost surely, 2^{21160521316446} is an apocalyptic number.

21160521316446 is an abundant number, since it is smaller than the sum of its proper divisors (23387944613154).

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

21160521316446 is a wasteful number, since it uses less digits than its factorization.

21160521316446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185618608063.

The product of its (nonzero) digits is 207360, while the sum is 42.

The spelling of 21160521316446 in words is "twenty-one trillion, one hundred sixty billion, five hundred twenty-one million, three hundred sixteen thousand, four hundred forty-six".