21060166637362 has 8 divisors (see below), whose sum is σ = 31698066509676. Its totient is φ = 10494144467472.

The previous prime is 21060166637359. The next prime is 21060166637413. The reversal of 21060166637362 is 26373666106012.

It can be written as a sum of positive squares in 2 ways, for example, as 15649374253041 + 5410792384321 = 3955929^2 + 2326111^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17969424873 + ... + 17969426044.

Almost surely, 2^{21060166637362} is an apocalyptic number.

21060166637362 is a deficient number, since it is larger than the sum of its proper divisors (10637899872314).

21060166637362 is a wasteful number, since it uses less digits than its factorization.

21060166637362 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35938851212.

The product of its (nonzero) digits is 1959552, while the sum is 49.

The spelling of 21060166637362 in words is "twenty-one trillion, sixty billion, one hundred sixty-six million, six hundred thirty-seven thousand, three hundred sixty-two".