21146542000202 has 64 divisors (see below), whose sum is σ = 35769009438720. Its totient is φ = 9324154135296.

The previous prime is 21146542000189. The next prime is 21146542000249. The reversal of 21146542000202 is 20200024564112.

It is a super-3 number, since 3×21146542000202³ (a number of 41 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6498173 + ... + 9193439.

It is an arithmetic number, because the mean of its divisors is an integer number (558890772480).

Almost surely, 2^{21146542000202} is an apocalyptic number.

21146542000202 is a deficient number, since it is larger than the sum of its proper divisors (14622467438518).

21146542000202 is a wasteful number, since it uses less digits than its factorization.

21146542000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2695515.

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 21146542000202 its reverse (20200024564112), we get a palindrome (41346566564314).

The spelling of 21146542000202 in words is "twenty-one trillion, one hundred forty-six billion, five hundred forty-two million, two hundred two", and thus it is an aban number.