21364763171402 has 16 divisors (see below), whose sum is σ = 36636873039360. Its totient is φ = 9153435887088.

The previous prime is 21364763171341. The next prime is 21364763171407. The reversal of 21364763171402 is 20417136746312.

It is not an unprimeable number, because it can be changed into a prime (21364763171407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240886277 + ... + 240974952.

It is an arithmetic number, because the mean of its divisors is an integer number (2289804564960).

Almost surely, 2^{21364763171402} is an apocalyptic number.

21364763171402 is a deficient number, since it is larger than the sum of its proper divisors (15272109867958).

21364763171402 is a wasteful number, since it uses less digits than its factorization.

21364763171402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481864405.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The spelling of 21364763171402 in words is "twenty-one trillion, three hundred sixty-four billion, seven hundred sixty-three million, one hundred seventy-one thousand, four hundred two".